<< February 2019 >>

## Friday, February 1, 2019

### Labor Lunch Seminar: Tuition subsidies and overeducation

Seminar | February 1 | 12-1 p.m. | 648 Evans Hall

Ciprian Domnisoru, Carnegie Mellon University

Center for Labor Economics

### Solid State Technology and Devices Seminar: Ultrafast Spintronics

Seminar | February 1 | 1-2 p.m. | Cory Hall, The Hogan Room, 521

Jeffery Bokor, Professor, Electrical Engineering and Computer Sciences Department, UC Berkeley

Magnetic nanodevices are receiving great attention these days due to their non-volatility and
potential for extremely low energy dissipation. The field is rapidly evolving from rotating
magnetic disks for mass storage to on-chip magnetic random access memory (MRAM).
MRAM is in the advanced product development phase in a number of companies and is
expected to be in widespread commercial...   More >

### Magnetism in Amorphous Alloys: Nano Seminar Series

Seminar | February 1 | 2-3 p.m. | 4 LeConte Hall

Prof. Frances Hellman, UC Berkeley, Physics & MSE

Most condensed matter textbooks start by introducing crystal symmetries and the periodic lattice as foundational to the field. Yet, it has long been known that the amorphous structure supports ferromagnetism, superconductivity, and a host of other condensed matter properties.

Superconductivity theory was famously expanded from the original Bloch wave pairing to be described as pairing of...   More >

### Student Probability/PDE Seminar: Hydrodynamics for ASEP with Open Boundaries

Seminar | February 1 | 2:10-3:30 p.m. | 891 Evans Hall

Dan Daniel Erdmann-Pham, UC Berkeley

Department of Mathematics

Rezakhanlou has shown that the hydrodynamic behaviour of ASEP and other attractive asymmetric particle processes on $R^d$ is governed by a class of conservation laws. That is, macroscopic particle density profiles are given by entropy solutions of these conservation laws. In this talk, we will discuss Bahadoran’s recent extension of these results to bounded domains with particle reservoirs at...   More >

### Job Market Seminar (Joint with Haas School): "Outside Options, Bargaining, and Wages: Evidence from Coworker Networks"

Seminar | February 1 | 2:10-3:30 p.m. | Haas School of Business, N270 Chou Hall

Sydnee Caldwell, MIT Economics

Department of Economics

Field(s): Labor Economics, Applied Econometrics, Personnel Economics, Public Finance

### Composition Colloquium: Etienne Charles

Colloquium | February 1 | 3 p.m. | 250 Morrison Hall

Department of Music

Over its century-plus history, jazz has forged its shape-shifting identity by encompassing a rainbow of musical dialects in an improvisation-infused setting. While jazz's potency launched into popular appeal based on the integration of the European classical music sensibility and the grassroots of African-American cultural heritage, it has not remained a static idiom. Indeed, jazz has become...   More >

### Book Talk: The Feminist Awakening in China

Colloquium | February 1 | 3-5 p.m. | UC Berkeley Extension (Golden Bear Center), IEAS Conference Room (510A)

Leta Hong Fincher

Lü Pin

Center for Chinese Studies (CCS)

On the eve of International Women’s Day in 2015, the Chinese government arrested five feminist activists and jailed them for 37 days. The Feminist Five became a global cause célèbre, with Hillary Clinton speaking out on their behalf, and activists inundating social media with #FreetheFive messages. But the Feminist Five are only symbols of a much larger feminist movement of university students,...   More >

### MENA Salon: 60,000 Political Prisoners and a New Cathedral: Is Sisi's Egypt Sustainable?

Workshop | February 1 | 3-4 p.m. | 340 Stephens Hall

January 25 marked the 8th anniversary of the Egyptian revolution. On Coptic Christmas Eve, January 6, Egyptian President Abdel Fattah Al-Sisi was interviewed by 60 Minutes' Scott Pelley in which he denied the existence of over 60,000 political prisoners in the country's prisons. The Egyptian government tried to block the interview from airing, to no avail. The interview was aired the same evening...   More >

### The Times They Are A-Changin’: The Influence of Scandal and Experience on Users’ Attitudes to Social Media Data Control

Seminar | February 1 | 3:10-5 p.m. | 107 South Hall

Catherine Marshall

Information, School of

Has widespread news of abuse made people more protective of their personal data?

### Raga Gopalakrishnan - Integrating Behavior, Economics, and Operations in Urban Mobility: Ridesharing and Multi-Modal Travel

Seminar | February 1 | 3:30-4:30 p.m. | 1174 Etcheverry Hall

Raga Gopalakrishnan, Cornell University

Abstract: In today’s urban mobility marketplaces, both operational policies (e.g., matching, routing) and economic mechanisms (e.g., pricing, incentives) affect perceptions of Quality of Service (QoS) and users’ mobility choices. These, in turn, affect both operational objectives (e.g., utilization, vehicle-miles travelled) and economic objectives (e.g., profit, welfare). We study these complex...   More >

### Dynasties and Democracy in Japan

Colloquium | February 1 | 4 p.m. | 180 Doe Library

Daniel M. Smith, Associate Professor, Harvard University

Political dynasties exist in all democracies, but have been conspicuously prevalent in Japan, where over a third of legislators and two-thirds of cabinet ministers come from families with a history in parliament. In his new book, Dynasties and Democracy: The Inherited Incumbency Advantage in Japan, Daniel M. Smith introduces a comparative theory to explain the persistence of dynastic...   More >

### Chemical Tools for Investigating Reactive Sulfur Species

Seminar | February 1 | 4-5 p.m. | 120 Latimer Hall

College of Chemistry

Reactive sulfur species, such as H2S and sulfane-sulfur compounds, play key roles in different (patho)physiological processes. In addition, these small molecules are also key targets for new donor motifs that function both as important research tools and pharmacological agents. Aligned with this importance, our lab has recently developed a palette of new donor motifs, including H2S- and...   More >

### Student Arithmetic Geometry Seminar: Etale Homotopy Obstructions for Rational Points Applied to Open Subvarieties

Seminar | February 1 | 4:10-5 p.m. | 891 Evans Hall

David Corwin, UCB

Department of Mathematics

In 2008, Bjorn Poonen announced the construction of a variety without rational points but no étale-Brauer obstruction to the existence of rational points. We attempt to create a new obstruction that explains Poonen s example by applying the étale-Brauer obstruction to a Zariski open cover of a variety. On the one hand, we prove a general result stating that this new obstruction explains every...   More >

## Monday, February 4, 2019

### EH&S 403 Training Session

Course | February 4 | 10:30-11:30 a.m. | 331 University Hall | Note change in date

Jason Smith, UC Berkeley Office of Environment, Health, & Safety

This session briefly covers the UC Berkeley specific radiation safety information you will need to start work.​ In addition, dosimeter will be issued, if required.

Seminar | February 4 | 11:10 a.m.-12:30 p.m. | 489 Minor Hall

Michael Telias, Postdoc in Richard Kramer's Lab; Joseph Leffler, PhD Candidate

Michael Telias's Abstract
Retinoic acid is the trigger for neural hyperactivity in retinal degeneration and
blocking its receptor unmasks light responses and augments vision

Light responses are initiated in photoreceptors, processed by interneurons, and synaptically transmitted to retinal ganglion cells (RGCs), which send information to the brain. Retinitis pigmentosa (RP) is a blinding...   More >

### Machine Learning Data-Driven Discretization Theories, Modeling and Applications: SEMM Seminar

Seminar | February 4 | 12-1 p.m. | 502 Davis Hall

Wing Kam Liu, PhD, PE, Northwestern University/Global Center on Advanced Material Systems and Simulation

An open problem in data-driven methods for mechanical science is the efficient and accurate description of heterogeneous material behavior that strongly depends on complex microstructure. To explore the future development and the adaptation of data-driven methods, new mathematical and computational paradigms and broad flexible frameworks are needed.

### UCB-UCSF Joint Medical Program Head of Foundational Medical Science Job Talk

Conference/Symposium | February 4 | 12-1 p.m. | 5101 Berkeley Way West

Lee HangFu, M.D., MBA

UCB-UCSF Joint Medical Program

It has been nearly half a century since the McMaster University introduced the Problem-Based Learning (PBL) pedagogy in medical education. Since then, hundreds of reviews and study reports have identified many critical issues affecting the success of the PBL unit. Nonetheless, we are still debating the efficacy and success of the PBL program. In his presentation, Dr. HangFu will be discussing the...   More >

### Combinatorics Seminar: Varieties of signature tensors

Seminar | February 4 | 12:10-1 p.m. | 939 Evans Hall | Note change in date

Bernd Sturmfels, UC Berkeley and Max Planck Institute

Department of Mathematics

We discuss recent developments in combinatorial algebraic geometry that were motivated by the study of rough paths in stochastic analysis. Every path in a real vector space is encoded in a signature tensor whose entries are iterated integrals. As the path varies over a nice family, we obtain an algebraic variety with interesting properties. Combinatorialists will especially enjoy the role played...   More >

### PERL Seminar: “Voting for Quality? The Impact of School Performance Information on Electoral Outcomes”

Seminar | February 4 | 12:30-1:30 p.m. | 223 Moses Hall

Marina Dias, UC Berkeley-ECON

BCEP

Political Economy Research Lunch:PERL is an opportunity for PhD students to present work in progress and receive valuable feedback from faculty and peers.

### Seminar 231, Public Finance:

Seminar | February 4 | 2-4 p.m. | 597 Evans Hall

Isabela Manelici, UCB; Francis Wong, UCB

Isabela Manelici - "The Distributional Effects of Multinationals' Entry"
Francis Wong - "The Property Tax as a Tax on Leveraged Committed Consumption"

### Seminar 211, Economic History: Eight Centuries if Global Real Rates and the `Suprasecular Decline’, 1311-2018

Seminar | February 4 | 2-3:30 p.m. | 639 Evans Hall

Paul Schmelzing, Harvard University

Department of Economics

### Probabilistic Operator Algebra Seminar: Conditionally free random variables: the two-states framework

Seminar | February 4 | 2-4 p.m. | 736 Evans Hall

Jorge Garza Vargas, UC Berkeley

Department of Mathematics

In non-commutative probability the notion of stochastic independence is not unique. Therefore an extension of free probability which produces a larger variety of limit laws is certainly of interest. In this seminar we will review the notion of conditional freeness, introduced by Bozejko and Speicher. We will survey some of the combinatorial and analytic tools that are used in this setting and...   More >

### String-Math Seminar: Magnificent Four with color

Seminar | February 4 | 2-3 p.m. | 402 LeConte Hall

Nicolo' Piazzalunga, Stony Brook & SCGP

Department of Mathematics

I will present the rank $$N$$ magnificent four theory, which is the supersymmetric localization of $$U(N)$$ super-Yang-Mills theory with matter on a Calabi-Yau fourfold, and conjecture an explicit formula for the partition function $$Z$$: it has a free-field representation, and surprisingly it depends on Coulomb and mass parameters in a simple way. Based on joint work with N.Nekrasov.

### Northern California Symplectic Geometry Seminar: Contact submanifolds in higher dimensions

Seminar | February 4 | 2:30-3:30 p.m. | 740 Evans Hall

Roger Casals, UC Davis

Department of Mathematics

In this talk, I will discuss our understanding of contact submanifolds in higher dimensions. First, I will introduce the problems we are interested in and the current techniques we have to address them. In the main focus of the talk, I will present the construction of contactomorphic (and smoothly isotopic) contact submanifolds which are actually not contact isotopic. This resolves one of the...   More >

### Differential Geometry Seminar: Cone spherical metrics

Seminar | February 4 | 3:10-4 p.m. | 939 Evans Hall

Bin Xu, University of Science and Technology of China

Department of Mathematics

Cone spherical metrics are conformal metrics with constant curvature one with finitely many conical singularities on compact Riemann surfaces. The existence problem of such metrics has been open over twenty years. I will introduce the respectful audience some progress on this problem joint with Qing Chen, Xuemiao Chen, Yiran Cheng, Bo Li, Lingguang Li, Santai Qu, Jijian Song, Yingyi Wu and Xuwen...   More >

### Canceled - to Be Postponed: Lifeworlds of Indigenous Languages

Colloquium | February 4 | 3:10-5 p.m. | 370 Dwinelle Hall

Beth Piatote, UC Berkeley

Department of Linguistics

How do the underlying structures, epistemologies, and cultural practices associated with Indigenous languages in North America enrich the study of disciplines beyond linguistics? Drawing on my own work in Nez Perce language and literature, as well as examples from other scholars, I will present some of the current influences of Indigenous language “lifeworlds” shaping scholarship in law,...   More >

### Northern California Symplectic Geometry Seminar: H-principle for complex contact structures on Stein manifolds

Seminar | February 4 | 4-5 p.m. | 740 Evans Hall

Franc Forstneric, University of Ljublana

Department of Mathematics

The aim of this talk is to present a first attempt towards homotopy classification of holomorphic contact structures on Stein manifolds. We introduce the notion of a formal complex contact structure and show that any such structure on an odd dimensional Stein manifold $X$ is homotopic (through formal contact structures) to a genuine holomorphic contact structure on a Stein domain in X which is...   More >

### Statistical inference for infectious disease modeling

Seminar | February 4 | 4-5 p.m. | 1011 Evans Hall

Department of Statistics

We discuss two recent results concerning disease modeling on networks. The infection is assumed to spread via contagion (e.g., transmission over the edges of an underlying network). In the first scenario, we observe the infection status of individuals at a particular time instance and the goal is to identify a confidence set of nodes that contain the source of the infection with high probability....   More >

### IB Seminar: Decoupling tooth loss from the origin of baleen in whales

Seminar | February 4 | 4-5 p.m. | 2040 Valley Life Sciences Building

Carlos Peredo, George Mason University

### Dare to Repair: From DNA Chemistry to Cancer and back again

Seminar | February 4 | 4-5 p.m. | 106 Stanley Hall

Sheila David, University of California, Davis

College of Chemistry

### Job Market Seminar: "Machine Learning for Set-Identified Linear Models"

Seminar | February 4 | 4:10-5:30 p.m. | 648 Evans Hall

Vira Semenova, MIT Economics

Department of Economics

Field(s): Econometrics, Industrial Organization

### The Paris Review: Women at Work with Emily Nemens

Presentation | February 4 | 6:30 p.m. |  Berkeley Art Museum and Pacific Film Archive

What does it mean to be a woman at work in the creative arts in 2019? The Paris Review’s new editor, Emily Nemens, reflects on this question through the lens of the storied literary quarterly’s Writers at Work interview series, the work of contemporary contributors, and her own creative practice as a writer and illustrator.

## Tuesday, February 5, 2019

### Workplace Civility: Respect in Action

Workshop | February 5 | 9 a.m.-12 p.m. | 24 University Hall

Ombuds

Learn practical steps for promoting civility at work, including guidelines for considerate conduct and ideas for creating a more inclusive work environment. Participants will also learn how to help their unit establish group norms and effective ways to respond to rudeness.

### Street Story: A Platform for Community Engagement

Presentation | February 5 | 10-11 a.m. |  Webex platform online

Kate Beck, UC Berkeley SafeTREC

Please join Kate Beck, program lead at UC Berkeley Safe Transportation Research and Education Center (SafeTREC) for a demonstration and discussion of Street Story, a web-based community engagement tool designed for people to report transportation safety issues they see and experience. The Street Story tool aims to help agencies and community groups collect information that can create a fuller...   More >

### Clayton Heathcock Lectureship: Studies Related to the ATP-Adenosine Pathway

Seminar | February 5 | 11 a.m.-12 p.m. | 120 Latimer Hall

Terry Rosen, Arcus Biosciences

College of Chemistry

Tumor cell death induced by hypoxia or chemotherapy releases large amounts of ATP (adenosine triphosphate) into the extracellular environment. ATP is rapidly converted to AMP (adenosine monophosphate) which, in turn, is converted by hypoxia-induced CD73 into adenosine (ADO). ADO suppresses immune responses, including those of T cells, NK cells and dendritic cells through activation of adenosine...   More >

### Seminar 217, Risk Management: Endogenous risk, indirect contagion and systemic risk

Seminar | February 5 | 11 a.m.-12:30 p.m. | 1011 Evans Hall

Speakers: Rama Cont, University of Oxford

Deleveraging by financial institutions in response to losses may lead to contagion of losses across institutions with common asset holdings. Unlike direct contagion via counterparty exposures, this channel of contagion -which we call indirect contagion- is mediated through market prices and does not require bilateral exposures or relations.

### Dynamic Neural Fields: the embodiment of neural computation

Seminar | February 5 | 12-1:30 p.m. | 560 Evans Hall

Yulia Sandamirskaya, Institute of Neuroinformatics, University of Zurich and ETH Zurich

Activity of neuronal populations in several cortical regions can be described by a Dynamic Neural Field (DNF) equation. A DNF is a continuous in time and in space activation function defined over a metric space spanned over perceptual (e.g., color, retinal location, orientation) or motor (e.g., orientation of the head, direction of movement) dimensions, in which neurons in the underlying...   More >

### Evaluating the impact and outcomes of STEM programs: A common sense approach

Workshop | February 5 | 12-1:30 p.m. | 290 Hearst Memorial Mining Building

Are your STEM programs, activities, events, courses, curricula really reaching their intended audiences? In this moderated panel presentation, you will learn how to measure and assess the impacts and outcomes of STEM programs.

### Student Faculty Macro Lunch - Inflation and Capital Misallocation

Presentation | February 5 | 12-1 p.m. | 639 Evans Hall

Amir Kermani, Assistant Professor, Department of Economics and Haas School of Business

Clausen Center

This workshop consists of one-hour informal presentations on topics related to macroeconomics and international finance, broadly defined. The presenters are UC Berkeley PhD students, faculty, and visitors.
** MUST RSVP**

RSVP by emailing jgmendoza@berkeley.edu by February 1.

### Webnet: The future of content delivery

Workshop | February 5 | 12-1:30 p.m. | 303 Doe Library

Tor Haugan, Writer/Editor, Library Communications Office

Director of Staff Learning and Development

### Seminar 218, Psychology and Economics: Selling Fast and Buying Slow: Heuristics and Trading Performance of Institutional Investors

Seminar | February 5 | 2-3:30 p.m. | 648 Evans Hall

Alex Imas, Carnegie Mellon University

Department of Economics

### Two-Year Home Country Physical Presence Requirement Workshop

Workshop | February 5 | 2-4 p.m. | International House, Sproul Rooms

J-1 and J-2 visitors subject to this requirement must return to their country of legal permanent residence for two years or obtain a waiver before being eligible for certain employment visas such as H (temporary employment), L (intra-company transfer), or Permanent Resident status ("green card"). Not all J visitors are subject as it depends on specific factors.

At this workshop, you will...   More >

### Seminar 237/281: Macro/International Seminar - "Household Debt Revaluation and the Real Economy": Evidence from a Foreign Currency Debt Crisis

Seminar | February 5 | 2-4 p.m. | 597 Evans Hall

Emil Verner, Assistant Professor of Finance, MIT

Department of Economics

Joint 237/281 Macro and International Trade Seminar

RSVP by emailing Joseph G. Mendoza at jgmendoza@berkeley.edu

### Clinical Science Colloquium

Colloquium | February 5 | 3:30-5 p.m. | 1104 Berkeley Way West

Amit Etkin MD PhD

Department of Psychology

Over the past two decades, neuroimaging studies have defined a set of distributed brain systems that contribute to cognition, emotion, mood and other mental processes. Perturbations in these circuits have been identified in different ways across psychiatric disorders. The challenge ahead of us is how to use these insights to: 1) understand the nature of neural circuit deficits in mental illnesses...   More >

### 3-Manifold Seminar: Special cube complexes

Seminar | February 5 | 3:40-5 p.m. | 736 Evans Hall

Larsen Linov, UC Berkeley

Department of Mathematics

A cube complex is a cell complex in which each n-cell is a n-dimensional cube. We'll define "special" cube complexes and explain their relationship to right-angled Artin groups. We'll also discuss some results about separability in their fundamental groups.

### 3-Manifold Seminar: Special cube complexes

Seminar | February 5 | 3:40-5 p.m. | 736 Evans Hall

Larsen Linov, UC Berkeley

Department of Mathematics

A cube complex is a cell complex in which each n-cell is a n-dimensional cube. We'll define "special" cube complexes and explain their relationship to right-angled Artin groups. We'll also discuss some results about separability in their fundamental groups.

### 2019 William Main Seminar Series: Fire Science, Policy and Management in California Wildlands

Seminar | February 5 | 4-5:30 p.m. | 125 Li Ka Shing Center

Mark Finney, U.S. Forest Service

William Main Seminar Endowment

The 2019 William Main Seminar Series examines the confluence of environmental science, policy and management in contending with the spate of recent fire outbreaks in California. We are excited to welcome Mark Finney, USFS Research Forester, who will kick off the series with his presentation, "Understanding Wildlife Spread through Experiments and Modeling".

### Single Molecule Probes and Single Particles Probed

Seminar | February 5 | 4-5 p.m. | 120 Latimer Hall

Laura Kaufman, Department of Chemistry, Columbia University

College of Chemistry

I will describe two projects in which we characterize complex systems – supercooled liquids and conjugated polymer aggregates – through single molecule or single particle fluorescence imaging. First, in supercooled liquids – systems that display behaviors consistent with the presence of heterogeneous dynamics – we investigate the time scales over which heterogeneities persist using “ideal” single...   More >

### Representation Theory and Mathematical Physics Seminar: Temperley-Lieb algebra action on the category of representations of periplectic supergroup

Seminar | February 5 | 4-5 p.m. | 748 Evans Hall

Vera Serganova, UC Berkeley

Department of Mathematics

We define the action of infinitely generated Temperley-Lieb algebra on the category of representations of the supergroup $$P(n)$$. The supergroup in question is an interesting super analogue of the orthogonal and symplectic groups. As an application of this construction we get algorithm computing characters of irreducible representation of $$P(n)$$ and some other esults. As n tends to infinity,...   More >

### How to Email a Professor to Get a Positive Response: Workshop

Workshop | February 5 | 4-5 p.m. | 9 Durant Hall

Leah Carroll, Haas Scholars Program Manager/Advisor, Office of Undergraduate Research and Scholarships

Do you need to email a professor you've never met before to ask for their help, but you don't know where to start? Have you ever written a long email to a professor, only to receive no response, or not the one you hoped? If so, this workshop is for you! We will discuss how to present yourself professionally over email to faculty and other professionals ...   More >

### Art for Your Apartment: and dorm

Presentation | February 5 | 5-6 p.m. | Doe Library, Morrison Room

Library

Come see and learn about the Graphic Arts Loan Collection.

This is framed art prints you can bring home and hang on your wall for the school year. Prints comprise a survey of movements and artists - from Impressionism to Cubism, and from Rembrandt to Miro.

This all takes place in the historic Morrison Room. A brief presentation will be followed by ample time to browse representative works...   More >

Note: borrowing from the Graphic Arts Loan Collection is limited to UCB students, faculty and staff and is free

## Wednesday, February 6, 2019

### No BioE Department Seminar

Seminar | February 6 | 106 Stanley Hall

Bioengineering (BioE)

### Educational Integration Across Generations among Mexicans and Other Origin Groups: A Brown Bag Talk

Colloquium | February 6 | 12-1 p.m. | 2232 Piedmont, Seminar Room

Jennifer Van Hook, Professor, Sociology, Penn State University

A lunch time talk and discussion session, featuring visiting and local scholars presenting their research on a wide range of topics of interest to demography.

### KUSTU ENDOWED LECTURE: "Mechanisms and Consequences of Biofilm Formation"

Seminar | February 6 | 12-1 p.m. | 101 Barker Hall

Fitnat Yildiz, University of California, Santa Cruz

Dr. Yildiz's lab at UCSC focuses on understanding molecular mechanisms of biofilm formation, c-di-GMP signaling, and environmental stress response. Dr. Yildiz received her B.S. from Hacettepe University, Turkey followed by her Ph.D. from Indiana University. She was a recipient of the Ellison Medical foundation New Scholar Award in Global Infectious Disease and is a Fellow of the American Academy...   More >

### MVZ LUNCH SEMINAR - Jennifer Smith: Evolutionary ecology of social networks in free-living mammals: From hyenas to ground squirrels

Seminar | February 6 | 12-1 p.m. | Valley Life Sciences Building, 3101 VLSB, Grinnell-Miller Library

Jennifer Smith

Museum of Vertebrate Zoology

MVZ Lunch is a graduate level seminar series (IB264) based on current and recent vertebrate research. Professors, graduate students, staff, and visiting researchers present on current and past research projects. The seminar meets every Wednesday from 12- 1pm in the Grinnell-Miller Library. Enter through the MVZ's Main Office, 3101 Valley Life Sciences Building, and please let the receptionist...   More >

### Computer Vision Beyond Recognition

Seminar | February 6 | 12-1:30 p.m. | 560 Evans Hall

Stella Yu, UC Berkeley

Computer vision has advanced rapidly with deep learning, achieving super-human performance on a few recognition benchmarks. At the core of the state-of-the-art approaches for image classification, object detection, and semantic/instance segmentation is sliding-window classification, engineered for computational efficiency. Such piecemeal analysis of visual perception often has trouble getting...   More >

### Greg Crutsinger on "Drones and data: aftermath of California's wildfires"

Conference/Symposium | February 6 | 12-1 p.m. | Sutardja Dai Hall, 310 Banatao Auditorium

CITRIS and the Banatao Institute

Drone technology has been increasingly used by public agencies for emergency and disaster response, including the recent devastating wildfires in California. However, the volume of information drones can collect quickly has resulted in a pressing need for rapid data processing and visualization. This lecture will walk through the use of drone imagery following three major...   More >

### Reclaiming Childhood in a Digital Age (BEUHS370)

Workshop | February 6 | 12:10-1:30 p.m. | Tang Center, University Health Services, Section Club

Richard Freed, Ph.D.

Be Well at Work - Work/Life

Dr. Richard Freed will speak on raising happy, healthy kids in the digital age. Learn how a virtually unknown merger between the tech industry and psychology is leading to video games, social media, and smartphones that kids can’t put down. And, why this means children and teens need our help to navigate this digital landscape.
This interactive talk will explore key questions:

• How...   More >

### Pan-Africanism - A History

Colloquium | February 6 | 12:30-2 p.m. | 223 Moses Hall

Hakim Adi, Professor of the History of Africa & the African Diaspora, University of Chichester

Professor Hakim Adi will introduce his latest book, Pan-Africanism – A History, in which he provides a history of the individuals and organizations that have sought the unity of all those of African origin as the basis for advancement and liberation.

### EE Seminar: Manipulating interfacial physics for novel multimodal and multiphase insect-scale robots

Seminar | February 6 | 1-2 p.m. | Soda Hall, Wozniak Lounge, 430

Several insect species, such as diving flies and diving beetles, exhibit remarkable locomotive capabilities in aerial, aquatic, and terrestrial environments, inspiring the development of similar capabilities in robots at the centimeter scale. In this talk I will present two insect-scale robots capable of multimodal and multiphase locomotion. I will start by presenting a 175mg, flapping wing robot...   More >

### Harmonic Analysis Seminar: Introduction to Fourier restriction via polynomial partitioning

Seminar | February 6 | 1:10-2 p.m. | 736 Evans Hall

Michael Christ, UC Berkeley

Department of Mathematics

Introduction to the work of L. Guth on application of the method of polynomial partitioning to Fourier restriction inequalities. This will be the first of a series of seminar meetings devoted to the 2016 article of Guth on this topic. Key concepts will be introduced. The method will be illustrated through an application to a simpler problem.

### Experimental design in an oligonucleotide synthesis factory using numerical simulations in Python and pandas

Seminar | February 6 | 1:30-2:45 p.m. | 775A Tan Hall

Aaron Wiegel, Data Scientist, Synthego

Department of Chemistry

Abstract: Regardless of the application, calculating a particular statistic and associated p-value is not necessarily the biggest challenge in designing an experiment, especially given the availability of open source software packages such as scipy and statsmodels in Python. Instead, ensuring that the assumptions required for a statistical test are actually satisfied by the data is far more...   More >

### Advances and Challenges in Computational Modeling of Dynamic Material Failure: From Single to Multi-Scale Simulations and Their Industrial Applications

Seminar | February 6 | 2-3 p.m. | 3110 Etcheverry Hall

Dr. C.T. Wu, Livermore Software Technology Corporation (LSTC)

Numerical modeling of material failure remains a formidable challenge to the computational mechanics community. Apparently, the pure continuum-based numerical methods are not able to accurately predict the material failure takes place at the finer scale. In other words, the C1-continuity assumption in most finite element methods is inadequate to describe the kinematic discontinuity of...   More >

### Topology Seminar (Introductory Talk): Involutive Heegaard Floer homology

Seminar | February 6 | 2:10-3 p.m. | 740 Evans Hall

Matthew Stoffregen, MIT

Department of Mathematics

We'll review the definition of Ozsvath-Szabo's Heegaard Floer homology, and then define the involutive version constructed by Hendricks and Manolescu.

### A phase transition in a spatial permutation model on infinite trees

Seminar | February 6 | 3-4 p.m. | 1011 Evans Hall

Milind Hegde, UC Berkeley

Department of Statistics

Abstract: Spatial random permutation models are of physical interest due to connections to representations of certain gases such as helium as well as of the quantum Heisenberg ferromagnet. Physical phase transitions in these contexts correspond to the appearance of macro or infinite cycles in the permutation model. We study a spatial random permutation model on infinite trees with a time...   More >

### Race—The Power of an Illusion

Panel Discussion | February 6 | 3-6 p.m. |  Sutardja Dai Hall

Larry Adelman, executive producer of RACE and co-director of California Newsreel, California Newsreel; john a. powell, UC Berkeley Faculty and Director of the Haas Institute, Haas Institute for a Fair and Inclusive Society; Michael Omi, Series Advisor and UC Berkeley faculty, Asian American and Asian Diaspora Studies; Jason Corburn, UC Berkeley faculty, City/Regional Planning and Public Health; Darlene Francis, UC Berkeley Faculty, School of Public Health and Neuroscience; Victoria Robinson, UC Berkeley Faculty and Director of the American Cultures Center, The Department of Ethnic Studies

Lulu Matute, Haas Scholar, Haas Scholars Program

A public event celebrating the launch of a new companion website for the groundbreaking documentary series, 'Race—The Power of an Illusion.'

### Number Theory Seminar: Absolute Hodge cycles

Seminar | February 6 | 3:40-5 p.m. | 748 Evans Hall

Koji Shimizu, UC Berkeley

Department of Mathematics

### UROC (Underrepresented Researchers of Color): Putting finishing touches to your research applications: A Practical hands-on workshop

Workshop | February 6 | 4-5:30 p.m. | 9 Durant Hall

Andrea Ramirez, UROC; Ife Okeke, UROC

For anyone who is applying to the Haas Scholars Program or to the SURF Program, we will be holding a workshop space for students to get feedback on their proposals. Please stop by at whatever stage you're in.If you're unable to make this workshop, but want an extra set of eyes, please email uroc@berkeley.edu to set up a time to meet. We will have food for y'all. Excited to see you there!

### Encapsulation of metal nanoparticles within microporous zeotypes via hydrothermal synthesis in the presence of ligand-protected metal cations

Colloquium | February 6 | 4-6 p.m. | 180 Tan Hall

Trenton Otto, Ph.D. student in the Iglesia Group

### Proteostasis, Sexual Dimorphism and Declining Adaptive Homeostasis in Ageing

Seminar | February 6 | 4-5 p.m. | 114 Morgan Hall

Kelvin Davies, USC

### Thematic Seminar: The tautological ring of the moduli space of curves

Seminar | February 6 | 4:10-5 p.m. | 740 Evans Hall

Aaron Pixton, Massachusetts Institute of Technology

Department of Mathematics

Let Mg be the moduli space of smooth curves of genus g. The tautological ring is a subring of the cohomology of Mg that was introduced by Mumford in the 1980s in analogy with the cohomology of Grassmannians. Work of Faber and Faber-Zagier in the 1990s led to two competing conjectural descriptions of the structure of the tautological ring. After reviewing these conjectures, I will discuss some of...   More >

### Center for Computational Biology Seminar: Dr. Beth Shapiro, Professor, UC Santa Cruz

Seminar | February 6 | 4:30-5:30 p.m. | 125 Li Ka Shing Center

Center for Computational Biology

Genomics, genetic rescue, and the future of conservation

Abstract: New technologies, including complete genome sequencing and genome engineering, promise to revolutionize conservation and slow the pace of the ongoing extinction crisis. However, the value of these technologies to conservation remains unclear. Using mountain lions from across their range and wolves from Isle Royale as examples,...   More >

### Religion: A Mellon Foundation Sawyer Seminar

Seminar | February 6 | 5-7 p.m. | 370 Dwinelle Hall

Niklaus Largier, UC Berkeley; Michael Warner, Yale; Mayanthi Fernando, UC Santa Cruz

Michael Lucey, UC Berkeley

These public talks continue the series of events connected to the Sawyer Seminar in Linguistic Anthropology & Literary and Cultural Studies that began in Fall 2018. Many of the studies taken up so far in the seminar depend on religious objects, rituals, or encounters to help illuminate those pragmatic aspects of discourse that might be more easily concealed in our everyday routines. Perhaps the...   More >

### Linguistic Anthropology and Literary and Cultural Studies: A Mellon Foundation Sawyer Seminar: Session 4: Religion

Conference/Symposium | February 6 – 7, 2019 every day | 5-7 p.m. | 370 Dwinelle Hall

Niklaus Largier, UC Berkeley; Michael Warner, Yale University; Mayanthi Fernando, UC Santa Cruz; Michael Allan, University of Oregon; Courtney Handman, University of Texas at Austin; Charles Hirschkind, UC Berkeley; Webb Keane, University of Michigan

This is the fourth of seven two-day meetings of a Mellon Foundation Sawyer Seminar taking place throughout 2018-2019. The seminar aims to explore the potential of a set of concepts, tools, and critical practices developed in the field of linguistic anthropology for work being done in the fields of literary and cultural criticism.

### Topology Seminar (Main Talk): An infinite-rank summand of the homology cobordism group

Seminar | February 6 | 5:10-6 p.m. | 3 Evans Hall | Note change in time

Matthew Stoffregen, MIT

Department of Mathematics

We explain a generalization of the techniques that Hom introduced to construct an infinite-rank summand of the topologically slice knot concordance group. We generalize Hom's epsilon-invariant to the involutive Heegaard Floer homology constructed by Hendricks-Manolescu. As an application, we see that there is an infinite-rank summand of the homology cobordism group. This is joint work with Irving...   More >

### We the People: Justice for Some

Panel Discussion | February 6 | 6:30-7:30 p.m. |  JCC East Bay, Berkeley Branch

1414 Walnut Street, Berkeley, CA 94709

JCC East Bay

Featuring GSPP professors Jack Glaser and Steve Raphael, prisoner's rights attorney Margot Mendelson, and moderated by Abbie VanSickle of the Marshall Project.

Join us for a guided conversation about the most pressing and complex issues in the criminal justice system today. This discussion will examine professors Glaser, Raphael, and Mendelson's research on inequality in the criminal justice...   More >

$20 Non-Member,$15 Member

## Thursday, February 7, 2019

### Special Seminar: Effective Arithmetic Geometry

Seminar | February 7 | 11 a.m.-12 p.m. | Calvin Laboratory (Simons Institute for the Theory of Computing), Main Lecture Hall | Note change in location

Yuri Tschinkel, Simons Foundation and NYU

Department of Mathematics

Tschinkel will discuss effectivity issues in several problems in arithmetic geometry, the study of solutions of systems of polynomial equations with integral coefficients.

### Applied Math Seminar: Adjoint sensitivity analysis of chaotic dynamical systems via shadowing methods

Seminar | February 7 | 11 a.m.-12 p.m. | 891 Evans Hall

Angxiu Ni, UC Berkeley

Department of Mathematics

In this talk we discuss how to compute derivatives of long-time-averaged objectives with respect to multiple system parameters in chaotic systems, via the recently developed non-intrusive least-squares adjoint shadowing (NILSAS) algorithm.

First we review how to compute such derivatives via comparing the base trajectory and a shadowing trajectory, which is a new trajectory with perturbed...   More >

### Econ 235, Financial Economics Seminar: No Seminar

Seminar | February 7 | 11:10 a.m.-12:30 p.m. | C330 Haas School of Business

Department of Economics

Joint with Haas Finance Seminar

### Oliver E. Williamson Seminar: "Common Values, Unobserved Heterogeneity, andEndogenous Entry in U.S. Offshore Oil Lease Auctions∗"

Seminar | February 7 | 12-1:30 p.m. | C325 Haas School of Business

Phil Haile, Yale

Department of Economics

The Oliver E. Williamson Seminar on Institutional Analysis, named after our esteemed colleague who founded the seminar, features current research by faculty, from UCB and elsewhere, and by advanced doctoral students. The research investigates governance and its links with economic and political forces. Markets, hierarchies, hybrids, and the supporting institutions of law and politics all come...   More >

### The Berkeley Network's Webinar Series: Fundamentals for Successful Career Change: 3 Effective Strategies and How to Prepare

Workshop | February 7 | 12-1 p.m. |  Virtual

Joy Lin, Quarter Life Joy

Cal Alumni Association

This webinar is designed to give you the fundamentals of preparing for a career change and effective strategies you can explore. You will walk away with a more realistic idea of what to expect, how to prepare, and what strategies can help make your career change possible.

### Back Talk: Less Stress on Your Back (BEUHS404)

Workshop | February 7 | 12:10-1:30 p.m. | Tang Center, University Health Services, Class of '42

Mallory Lynch, Campus Ergonomist, Ergonomics@Work

Ergonomics@Work

Learn new ways of performing daily activities with less stress to your back. Practice some useful stretching and strengthening exercises. Wear comfortable clothing.

### Research Colloquium: Dr. Jerry Brandell "Psychoanalysis in the Halls of Social Work Academe: Can this patient be saved?"

Colloquium | February 7 | 12:10-1:30 p.m. | Haviland Hall, Commons/116

Social Welfare, School of

Psychoanalytic theory is not a unified body of knowledge, but rather, composed of multiple theories, models, and schemata pertaining to development, psychopathology, and clinical method and technique. It is a literature of vast scope whose evolution now spans 125 years. This history is actually fraught with points of convergence and dissonance; important issues and controversies surrounding the...   More >

### The California Housing Crisis and Potential Solutions

Panel Discussion | February 7 | 12:15-1:30 p.m. | 250 Goldman School of Public Policy

Join us for a new lunch series to discuss the housing crisis in California and potential solutions. Prominent leaders in state policy alongside real estate professionals will lead panel discussions followed by time for Q&A. Free lunch provided!

### Econ 235, Financial Economics Student Seminar: No Meeting

Seminar | February 7 | 1-2 p.m. | 597 Evans Hall

Department of Economics

### How to Write a Research Proposal Workshop

Workshop | February 7 | 2-3 p.m. | 9 Durant Hall

Leah Carroll, Haas Scholars Program Manager/Advisor, Office of Undergraduate Research and Scholarships

Need to write a grant proposal? This workshop is for you! You'll get a head start on defining your research question, developing a lit review and project plan, presenting your qualifications, and creating a realistic budget.

Open to all UC Berkeley students.

### ESPM Seminar Series, Spring 2019

Seminar | February 7 | 3:30 p.m. | 132 Mulford Hall

David Ackerly

David Ackerly, Dean of the College of Natural Resources at UC Berkeley, will present: "Topography, species distributions and impacts of climate change on California native plants." Hosted by George Roderick. Meet the speaker and enjoy refreshments after the talk in 139 Mulford Hall.

### Higher Education Careers for PhDs

Panel Discussion | February 7 | 3:30-5 p.m. | Sproul Hall, Room 309

Dr. Lilia Chavez, Dean of Special Projects and Grants, Merritt College; Dr. Brooke Hessler, Director of Learning Resources, California College of the Arts; Mackenzie Smith MFA Communications Specialist, UC Berkeley College of Natural Resources

Dr. Colette Plum, Deputy Director Study Abroad, UC Berkeley

Career Center

This panel program will introduce career options in higher education. Learn about the paths of PhD professionals as they discuss their work in Learning Resources, Student Life, International Education and Science Communication.

### Seminar 242, Econometrics: "Deep Neural Networks for Estimation and Inference: Application to Causal Effects and Other Semiparametric Estimands".

Seminar | February 7 | 4-5 p.m. | 597 Evans Hall

Max Farell, University of Chicago Booth

Department of Economics

### Inverse RNA folding and Computational Riboswitch Detection

Seminar | February 7 | 4-5 p.m. | 1011 Evans Hall

Professor Danny Barash, Department of Computer Science, Ben-Gurion University

Department of Statistics

The inverse RNA folding problem for designing sequences that fold into a given RNA secondary structure was introduced in the early 1990's in Vienna. Using a coarse-grain tree graph representation of the RNA secondary structure, we extended the inverse RNA folding problem to include constraints such as thermodynamic stability and mutational robustness, developing a program called RNAexinv. In the...   More >

### Mathematics Department Colloquium: Fukaya categories with coefficients and spectral networks

Colloquium | February 7 | 4:10-5 p.m. | 60 Evans Hall

Carlos Simpson, Université de Nice

Department of Mathematics

A conjecture of Kontsevich says that the Fukaya category of a symplectic manifold having an additional volume form, should have a stability condition where the stable objects are represented by possibly singular "special Lagrangians". This statement has a nice expression, in the case where we look at the Fukaya-Seidel category of a Riemann surface with coefficients in a fiber category. The...   More >

### Religion: A Mellon Foundation Sawyer Seminar

Seminar | February 7 | 5-7 p.m. | 370 Dwinelle Hall

Michael Allan, University of Oregon; Courtney Handman, UT Austin; Webb Keane, University of Michigan

Michael Lucey, UC Berkeley

These public talks continue the series of events connected to the Sawyer Seminar in Linguistic Anthropology & Literary and Cultural Studies that began in Fall 2018. Many of the studies taken up so far in the seminar depend on religious objects, rituals, or encounters to help illuminate those pragmatic aspects of discourse that might be more easily concealed in our everyday routines. Perhaps the...   More >

### Linguistic Anthropology and Literary and Cultural Studies: A Mellon Foundation Sawyer Seminar: Session 4: Religion

Conference/Symposium | February 6 – 7, 2019 every day | 5-7 p.m. | 370 Dwinelle Hall

Niklaus Largier, UC Berkeley; Michael Warner, Yale University; Mayanthi Fernando, UC Santa Cruz; Michael Allan, University of Oregon; Courtney Handman, University of Texas at Austin; Charles Hirschkind, UC Berkeley; Webb Keane, University of Michigan

This is the fourth of seven two-day meetings of a Mellon Foundation Sawyer Seminar taking place throughout 2018-2019. The seminar aims to explore the potential of a set of concepts, tools, and critical practices developed in the field of linguistic anthropology for work being done in the fields of literary and cultural criticism.

## Friday, February 8, 2019

### Berkeley Linguistics Society Workshop: Countability Distinctions

Conference/Symposium | February 8 | 370 Dwinelle Hall

David Barner, UC San Diego; Suzi Lima, University of Toronto

Department of Linguistics

See the Workshop Program.

### Sarah Pinto | The Arts of Counter-Ethics

Workshop | February 8 | 10 a.m.-12 p.m. | Barrows Hall, H. Michael and Jeanne Williams Seminar Room, Social Science Matrix, (8th Floor) | Note change in location

Sarah Pinto, Professor of Anthropology, Tufts University

Lawrence Cohen, Professor in Anthropology and South and Southeast Asian Studies, UC Berkeley

A workshop led by Professor Sarah Pinto, Professor of Anthropology at Tufts University.

### Vive Center Seminar - Computer Vision at Magic Leap

Seminar | February 8 | 10:30 a.m.-12 p.m. | Cory Hall, 337 Cory

Jean-Yves Bouguet, Senior Director of Computer Vision at Magic Leap

Vive Center

Jean-Yves will be presenting past, present and future research and development work in the computer vision group at Magic Leap leading to the Magic Leap One. He will provide some insights on the technical challenges that Magic Leap's team of researchers and engineers are tackling to make computer vision work for a see-through wearable Mixed Reality device.

### UROC (Underrepresented Researchers of Color): research proposal and application draft-reading: Get feedback from an experienced undergraduate researcher

Workshop | February 8 | 11:30 a.m.-1:30 p.m. | 14 Durant Hall

Andrea Ramirez, UROC

### Seminar 237/281: ARE/Macro/International Seminar - "Border Walls"

Seminar | February 8 | 12-2 p.m. | 597 Evans Hall

Melanie Morten, Assistant Professor of Economics, Stanford University

Department of Economics

ARE/237/281 Macro and International Trade Seminar

RSVP by emailing Joseph G. Mendoza at jgmendoza@berkeley.edu

### Border Walls

Seminar | February 8 | 12:10-1:30 p.m. | 597 Evans Hall

Melanie Morten, Stanford

### Dancing for Fun and Fitness (BEUHS605)

Workshop | February 8 | 12:10-1 p.m. | 251 Hearst Gymnasium

Be Well at Work - Wellness

Fit some fun and fitness into your day with these free, beginner dance classes. Zumba will be 9/7, Salsa will be 10/19, Hula / Polynesian will be11/2, and Zumba / Salsa will be 12/7. No partner required. Comfortable clothing and athletic shoes recommended.

### Solid State Technology and Devices Seminar: Light based Sound Extraction:Remote Photonic Bio-Sensing and Disease Diagnosis

Seminar | February 8 | 1-2 p.m. | Cory Hall, The Hogan Room, 521

Zeev Zalevsky, Professor, Engineering and the Nanotechnology Center, Bar-Ilan University, Israel

I will present a photonic technological sensing platform that can be used for remote and simultaneous sensing of many biomedical parameters as well as for serving as highly directional hearing aid device. The technology is based upon illuminating a light scattering surface (skin) with a laser and then using a camera with its special optics to perform temporal and spatial tracking of the back...   More >

### GRASP seminar: Introduction to D-modules via Bernstein-Sato polynomials

Seminar | February 8 | 2-3 p.m. | 732 Evans Hall

Aaron Brookner, UCB

Department of Mathematics

Given a real polynomial $p$ in $n$-variables, we define a family of distributions over $\{\lambda \in \mathbb C | \text {Re}\lambda >0\}$, generalizing the Γ-function. We claim that it is possible to analytically continue this family, exactly the same way as is traditionally done for the Γ-function, using the existence of the so-called Bernstein-Sato polynomial, $b_p$, of $p$.

We compute some...   More >

### Discrete Microfluidics for More Efficient Pharmaceutical Compound Testing: Nano Seminar Series

Seminar | February 8 | 2-3 p.m. | 4 LeConte Hall

Prof. Melinda Simon, San Jose State University, Biomedical Engineering

In 2012, the declining efficiency and increasing cost of pharmaceutical research was noted in a phenomenon termed “Eroom’s law”, to distinguish it from the efficiency of “Moore’s law” in transistor development.

Though the reasons for this phenomenon are myriad and varied, the efficiency of drug development and commercialization could be greatly improved by the development of better paradigms...   More >

### MENA Salon: Western Arms Sales and Human Rights in the Middle East

Workshop | February 8 | 3-4 p.m. | 340 Stephens Hall

Every Friday the CMES hosts an informal guided discussion of current events in the Middle East and North Africa, open to all.

On January 27, French President Emmanuel Macron began his first official visit to Egypt. The meeting of Macron and Egyptian President Abdel Fattah Al-Sisi solidified a strategic relationship between France, as one of Egypt's main arms suppliers, and Egypt, described by...   More >

### Composition Colloquium: Michael Pisaro

Colloquium | February 8 | 3 p.m. | 250 Morrison Hall

Department of Music

MICHAEL PISARO was born in Buffalo in 1961.

He is a composer and guitarist, a member of the Wandelweiser Composers Ensemble and founder and director of the Experimental Music Workshop, Calarts.

His work is frequently performed in the U.S. and in Europe, in music festivals and in many smaller venues.

It has been selected twice by the ISCM jury for performance at World Music Days...   More >

### Information Flows and Cultural Disruption

Seminar | February 8 | 3:10-5 p.m. | 107 South Hall

Michael Buckland

Information, School of

A change to a societyâs pattern ofÂcommunication, coordination, trust, and coercion is culturally disruptive.

### Sébastien Martin - From School Buses To Start Times: Driving Policy With Optimization

Seminar | February 8 | 3:30-4:30 p.m. |  Etcheverry Hall

Sébastien Martin, Massachusetts Institute of Technology

Abstract: Maintaining a fleet of buses to transport students to school is a major expense for U.S. school districts. In order to reduce costs by reusing buses between schools, many districts spread start times across the morning. However, assigning each school a time involves estimating the impact on transportation costs and reconciling additional competing objectives. Facing this intricate...   More >

### Logic Colloquium: Some applications of model theory in computer science

Colloquium | February 8 | 4-5 p.m. | 60 Evans Hall

Szymon Toruńczyk, University of Warsaw

Department of Mathematics

I will present a few basic applications of model theory in theoretical computer science, e.g. in verification, databases, and algorithms. I will also briefly discuss some links between notions from graph theory and stability theory.

### Neil Bartlett Lectureship: The close and loose relationship between Carbon and Phosphorus

Seminar | February 8 | 4-5 p.m. | 120 Latimer Hall

Manfred Scheer, Institute of Organic Chemistry, Universitat Regensburg

College of Chemistry

Polyphosphorus units are an important class of compound and isolobal to carbon-based relatives. Because of the lone pairs at the phosphorus atoms, the five-fold symmetric cyclo-P5 ring of the pentaphosphaferrocenes [CpRFe(η5-P5)] enables the use of these complexes in unique supramolecular aggregations with Lewis acidic transition metal moieties to form unprecedented giant spherical molecules...   More >

### Student 3-Manifold Seminar: The loop theorem and Dehn's lemma

Seminar | February 8 | 4-5:30 p.m. | 939 Evans Hall

Kyle Miller, UC Berkeley

Department of Mathematics

Simplified, the loop theorem states that if the induced map $\pi _1(\partial M)\to \pi _1(M)$ for a $3$-manifold $M$ is not injective, then there is a nullhomotopy of an essential loop in $\partial M$ that can be represented by an embedded disk. We will go through the proof of Stalling's formulation of the loop theorem using Papakyriakopoulos's tower construction and discuss some applications.

### Student Arithmetic Geometry Seminar: Etale Homotopy Obstructions for Rational Points Applied to Open Subvarieties

Seminar | February 8 | 4:10-5 p.m. | 891 Evans Hall

David Corwin, UCB

Department of Mathematics

Last week, I explained the (etale) Brauer-Manin obstruction and Poonen's counterexample. I also stated my result that the Brauer-Manin obstruction on Zariski open covers is enough to (theoretically) determine the existence of rational points. This week, I will say more about how to prove this result. I will also explain the idea behind the etale homotopy obstruction to the local-global principle...   More >

### Hungry for Change: Emerging Food Systems Leaders

Panel Discussion | February 8 | 5-7:30 p.m. | 112 Wurster Hall

Berkeley Food Institute

Across California, an emerging generation of food system leaders is advancing food equity, justice, and health in new and transformative ways. The stories of these champions of change highlight our collective struggle and aspiration to reimagine how to feed communities fairly while healing the planet.
The evening will begin with a reception and tasty food before we sit down to listen to ten...   More >