<< Monday, October 29, 2018 >>

## Monday, October 29, 2018

### Set Summary Perception, Outlier Pop Out, and Categorization: A Common Underlying Computation?

Seminar | October 29 | 11:10 a.m.-12:30 p.m. | 489 Minor Hall

Shaul Hochstein, Professor, The Hebrew University of Jerusalem

Recent research has focused on perception of set statistics. Presented briefly with a group of elements, simultaneously or successively, observers report precisely the mean of a variety of set features, but are unaware of individual element values. This has been shown for both low and high level features, from circle size to facial expression. A remaining puzzle is how can the perceptual system...   More >

### PF Lunch Seminar:

Seminar | October 29 | 12-2 p.m. | 648 Evans Hall

Charlotte Bartels - "Was Marx right? Income inequality, capital share and voting behavior in late 19th century Germany"
Timm Bönke - “Lifetime inequality and redistribution in Germany”

by October 25.

### Mindfulness at Moffitt: Moffitt Wellness Program

Workshop | October 1 – December 10, 2018 every Monday with exceptions | 12-1 p.m. | Moffitt Undergraduate Library, 501 (Wellness Room)

Library

Help focus your mind and foster your creativity. Increase your resiliency and well being. Join Jeffrey Oxendine of the School of Public Health for mindfulness practice.

All experience levels welcome; weekly practice or drop in attendance also welcome. Mondays from noon to 1pm.

Must have campus I.D. (Cal 1 card) for entrance

### Combinatorics Seminar: Nonsymmetric Macdonald polynomials and Demazure characters

Seminar | October 29 | 12:10-1 p.m. | 939 Evans Hall

Sami H. Assaf, University of Southern California

Department of Mathematics

Macdonald introduced symmetric functions in two parameters that simultaneously generalize Hall—Littlewood symmetric functions and Jack symmetric functions. Opdam and Macdonald independently introduced nonsymmetric polynomial versions of these that Cherednik then generalized to any root system. Sanderson and Ion showed that these nonsymmetric Macdonald polynomials with one parameter specialized...   More >

### Children Learning to Collaborate: Cultural Paradigms

Colloquium | October 29 | 12:10-1:30 p.m. | 1102 Berkeley Way West

Barbara Rogoff, University of California, Santa Cruz

Department of Psychology

How do children learn to collaborate with others? In this talk, Barbara Rogoff discusses cultural differences in children's collaboration and in supports for learning to collaborate. She argues that collaboration is a key aspect of a cultural paradigm for learning that is especially prevalent in many Mexican and Indigenous-heritage communities of the Americas, where children have wide opportunity...   More >

### Seminar 211, Economic History: The Effect of Political Power on Labor Market Inequality: Evidence from the 1965 Voting Rights Act

Seminar | October 29 | 2-3:30 p.m. | 597 Evans Hall

Abhay Aneja, UC Berkeley

Department of Economics

### String-Math Seminar: Coulomb branch integrals and mock modular forms

Seminar | October 29 | 2-3 p.m. | 402 LeConte Hall

Georgios Korpas, Trinity College Dublin & University of Athens

Department of Mathematics

We revisit Donaldson-Witten theory, that is the $$N=2$$ topologically twisted super Yang-Mills theory with gauge group $$SU(2)$$ or $$SO(3)$$ on compact 4-manifolds. We study the effective action in the Coulomb branch of the theory and by considering a specific $$Q$$-exact deformation to the theory we find interesting connections to mock modular forms. A specific operator of this theory computes...   More >

### Arithmetic Geometry and Number Theory RTG Seminar: Polylogarithms, Chabauty's Method, and the S-Unit Equation

Seminar | October 29 | 3:10-5 p.m. | 748 Evans Hall

David Corwin, UC Berkeley

Department of Mathematics

In the first half, we will review Chabauty's and Skolem's methods. We will then explain how these can be generalized to the non-abelian Chabauty's method of Minhyong Kim. If time allows, I will also mention polylogarithms.

In the second half, we will describe work by the speaker and Ishai Dan-Cohen, building on previous work of Brown, Dan-Cohen, and Wewers, that computes with Kim's method in the...   More >

### Arithmetic Geometry and Number Theory RTG Seminar: Polylogarithms, Chabauty's method, and the S-unit equation

Seminar | October 29 | 3:10-5 p.m. | 748 Evans Hall

David Corwin, UC Berkeley

Department of Mathematics

In the first half, we will review Chabauty's and Skolem's methods. We will then explain how these can be generalized to the non-abelian Chabauty's method of Minhyong Kim. If time allows, I will also mention polylogarithms.

In the second half, we will describe work by the speaker and Ishai Dan-Cohen, building on previous work of Brown, Dan-Cohen, and Wewers, that computes with Kim's method in the...   More >

### Vision to Action: Towards a Cellular-Resolution Atlas of the Zebrafish Visual and Visuomotor System

Seminar | October 29 | 4-5 p.m. | 125 Li Ka Shing Center

Herwig Baier, Department Genes – Circuits – Behavior, Max Planck Institute of Neurobiology, 82152 Martinsried, Germany

Understanding brain-wide neuronal dynamics and behavior requires a detailed map of the underlying circuit architecture. We built an interactive cellular-resolution atlas of the zebrafish brain, with a focus on the visual and visuomotor system, and generated from our dataset an inter-areal wiring diagram, which serves as ground truth for synapse-scale, electron microscopic reconstructions. We have...   More >

### Seminar 208, Microeconomic Theory: "Games of Love and Hate"

Seminar | October 29 | 4-5:30 p.m. | 639 Evans Hall

Rajiv Vohra, Brown

Department of Economics

Co-Authored with Debraj Ray

### Analysis and PDE Seminar: Wave maps on (1+2)-dimensional curved spacetimes

Seminar | October 29 | 4:10-5 p.m. | 740 Evans Hall

Casey Jao, UCB

Department of Mathematics

I will discuss recent joint work, with Cristian Gavrus and Daniel Tataru, in which we consider wave maps on a (1+2)-dimensional nonsmooth background. Our main result asserts that in this variable-coefficient context, the wave maps system is wellposed at almost-critical regularity.

### Deformation Theory Seminar: $A_\infty$ and differential graded algebras

Seminar | October 29 | 5:10-6:30 p.m. | 891 Evans Hall

Meredith Shea, UC Berkeley

Department of Mathematics

We will review the theory of $A_\infty$-algebras, their minimal models and differential graded realizations. We discuss the example of the Ext algebra which arises in Koszul duality.