Monday, September 18, 2017
Colloquium | August 25 – December 1, 2017 every day | 112 Wurster Hall
FRIDAYS - AUG 25 through DEC 1. CHECK THE SCHEDULE FOR SPEAKERS. Bay Area Leaders discuss topics in sustainability.
Seminar | September 18 | 12-1 p.m. | 939 Evans Hall
Bernd Sturmfels, University of California, Berkeley
Gaussoids offer a new link between combinatorics, statistics and algebraic geometry. Introduced by Lnenicka and Matus in 2007, their axioms describe conditional independence for Gaussian random variables. This lecture introduces gaussoids to an audience familiar with matroids. The role of the Grassmannian for matroids is now played by a projection of the Lagrangian Grassmannian. We discuss the... More >
Seminar | September 18 | 2-3 p.m. | 402 LeConte Hall
Tudor Dimofte, UC Davis
"Koszul duality" is a fundamental idea spanning several branches of mathematics, with origins in representation theory and rational homotopy theory. In its simplest incarnation, it relates pairs of algebras (such as symmetric and exterior algebras) that have equivalent categories of representations. Koszul duality also turns out to play a fundamental role in physics, governing the structure of... More >
Seminar | September 18 | 2-3 p.m. | 891 Evans Hall
Nick Bhattacharya, UC Berkeley
We will first discuss the problem of sampling from a given distribution on a graph. We then discuss a more problem - given a set of configurations on the vertices of a graph (for example colorings), how do we sample from that? These problems are addressed by the so-called Glauber Dynamics and the Metropolis Algorithm.
Second, we will give some basic results relating mixing times, total variation... More >
Creating Psychological Profiles from Peoples Digital Footprints: Michal Kosinski, Assistant Professor, Organizational Behavior, Graduate School of Business, Stanford University
Presentation | September 18 | 2-3:30 p.m. | 820 Barrows Hall
Dr. Michal Kosinski is a psychologist and data scientist. In his talk, he will discuss his research showing that digital records of behavior, such as samples of text, Tweets, Facebook Likes, or web-browsing logs, can be used to accurately measure a wide range of traits, including personality, intelligence, and political views.
Seminar 211, Economic History: Railroads and the Rural to Urban Transition: Evidence from 19th Century Argentina
Seminar | September 18 | 2-4 p.m. | 597 Evans Hall
Seminar | September 18 | 2-3:30 p.m. | 648 Evans Hall | Canceled
Probabilistic Operator Algebra seminar: Twisted canonical anti-commutation relations and twisted independence
Seminar | September 18 | 3-5 p.m. | 736 Evans Hall
Naofumi Muraki, Iwate Prefectural University
We will construct a one-parameter deformation of tensor product ( = twisted product) for non-commutative probability spaces, and show the existence of the associated universal calculation rule ( = twisted independence) for mixed moments of non-commutative random variables. The construction was inspired from the twisted canonical anti-commutation relations of W. Pusz.
Seminar | September 18 | 3:10-5 p.m. | 891 Evans Hall
Kenneth A. Ribet, University of California, Berkeley
Let $X$ be the modular curve $X_0(N)$, where $N$ is a positive integer. The $cusps$ on $X$ are the points of $X$ at infinity.'' According to the theorem of ManinDrinfeld, the group of degree-0 cuspidal divisors on $X$ maps to a finite subgroup of the Jacobian of $X$. This group is the $cuspidal$ $subgroup$ $C$ of the Jacobian.
There is a general feeling that $C$ ought to be big in various... More >
Seminar | September 18 | 3:30-5 p.m. | 3108 Etcheverry Hall
Matteo Basei, UC Berkeley
Abstract. This paper analyses the interaction between centralised carbon-emissive technologies and distributed intermittent non-emissive technologies. In our model, there is a representative consumer who can satisfy her electricity demand by investing in distributed generation (solar panels) and by buying power from a centralised firm at a price the firm sets. Distributed generation is... More >
Seminar | September 18 | 4-5 p.m. | 220 Jacobs Hall
Designer, artist, and UC Davis assistant professor Thomas Maiorana will speak as part of Design Field Notes, a pop-up series that brings a design practitioner to a Jacobs Hall teaching studio to share ideas, projects, and practices.
Seminar | September 18 | 4-5 p.m. | 748 Evans Hall
Harrison Chen, UC Berkeley
This talk will be mostly introductory. We will define the cyclic homology of perfect sheaves on a stack from a categorical and geometric standpoint via circle actions on categories and derived loop spaces. We will review equivariant localization in broad strokes, state it for periodic cyclic homology of smooth toric quotient stacks and give an idea of the proof. Time permitting, I will discuss... More >
Seminar | September 18 | 4-5:30 p.m. | 648 Evans Hall
Gianmarco Leon, Pompeu Fabra
Panel Discussion | September 18 | 4-5:15 p.m. | Morgan Hall, Morgan Lounge
We are kicking off the 2017/18 DFS Seminar Series with a panel discussion that aims to broaden what we think of when we say "diversification" in farming systems. The frame and practice of diversity builds ecological and economic resilience at the field, farm, and landscape scales. This panel will explore the role, challenges, and opportunities for a diversity of perspectives and approaches in DFS... More >
Colloquium | September 18 | 4-6 p.m. | B-4 Dwinelle Hall
The third lecture in the Slavic Graduate Colloquium Fall 2017 series.
Colloquium | September 18 | 4-6 p.m. | 180 Doe Library
Nicolas Tackett, History, UC Berkeley
Emily Mokros, CCS Postdoctoral Fellow, 2017-2018
In seventeenth-century China, the Qing dynasty inherited a troubled information order. Within the bureaucracy, lengthy procedural correspondence buried urgent messages and covert networks troubled official hierarchies. Beyond the reach of the state, gossip and rumor endangered the stability of the new dynasty. This paper analyzes the negotiation of information scandals in the first century of... More >
Analysis and PDE Seminar: Resolvent estimates and wave asymptotics for manifolds with cylindrical ends
Seminar | September 18 | 4:10-5 p.m. | 740 Evans Hall
Kiril Datchev, Purdue University
Wave oscillation and decay rates on a manifold \(M\) are well known to be related to the geometry of \(M\) and to dynamical properties of its geodesic flow. When \(M\) is a closed system, such as a bounded Euclidean domain or a compact manifold, there is no decay and the connection is made via the eigenvalues of the Laplacian. When \(M\) is an open system, such as the complement of a bounded... More >
Reading - Nonfiction | September 18 | 5-7 p.m. | Stephens Hall, 10 (ISAS Conf. Room)
Anisul Hoque, Writer, poet, playwright, and columnist
Sanchita B. Saxena, Director, Subir and Malini Chowdhury Center for Bangladesh Studies; Executive Director, Institute for South Asia Studies
An evening with writer, poet, playwright, and columnist from Bangladesh, Anisul Hoque.
Seminar | September 18 | 5:30-6:30 p.m. | 106 Stanley Hall
Dr. Marcia McNutt, President of the National Academy of Sciences
Marcia McNutt (B.A. in physics, Colorado College; Ph.D. in earth sciences, Scripps Institution of Oceanography) is a geophysicist and the 22nd president of the National Academy of Sciences. From 2013 to 2016, she was editor-in-chief of Science journals. McNutt was director of the U.S. Geological Survey from 2009 to 2013, during which time USGS responded to a number of major disasters, including... More >