Previous Conferences & Workshops

Apr
12
2021

Analysis Seminar

Long time dynamics of 2d Euler and nonlinear inviscid damping
Hao Jia
4:30pm|Remote Access

In this talk, we will discuss some joint work with Alexandru Ionescu on the nonlinear inviscid damping near point vortex and monotone shear flows in a finite channel. We will put these results in the context of long time behavior of 2d Euler...

Apr
12
2021

Members' Colloquium

Character bounds for finite simple groups
Pham Tiep
2:00pm|Simonyi Hall 101 and Remote Access

Given the current knowledge of complex representations of finite simple groups, obtaining good upper bounds for their characters values is still a difficult problem, a satisfactory solution of which would have significant implications in a number of...

Apr
12
2021

Computer Science/Discrete Mathematics Seminar I

Privacy as Stability, for Generalization
Katrina Legitt
11:15am|Remote Access - see Zoom link below

Many data analysis pipelines are adaptive: the choice of which analysis to run next depends on the outcome of previous analyses. Common examples include variable selection for regression problems and hyper-parameter optimization in large-scale...

Apr
08
2021

Joint IAS/Princeton University Number Theory Seminar

Low moments of character sums
Adam Harper
4:30pm|Remote Access

Sums of Dirichlet characters $\sum_{n \leq x} \chi(n)$ (where $\chi$ is a character modulo some prime $r$, say) are one of the best studied objects in analytic number theory. Their size is the subject of numerous results and conjectures, such as the...

Apr
08
2021

Quantum Groups Seminar

Representations of quantum groups at roots of 1
Jize Yu
4:00pm|Remote Access

We discuss modular representations of reductive algebraic groups and then proceed to representations of quantum groups at roots of unity

Apr
07
2021

Mathematical Conversations

For a given finite group G, which spaces can be the fixed point set of a G-action on a given compact space?
Sylvain Cappell
5:30pm|Remote Access

Which spaces can be the fixed point sets of actions of $G$ on finite cell-complexes of a given homotopy type? The general answers to such questions, for $G$ not a group of prime-power order, will be expressed, even for non-simply-connected spaces...

Apr
07
2021

Geometric and Modular Representation Theory Seminar

K-Motives and Koszul Duality in Geometric Representation Theory
Jens Eberhardt
3:00pm|Simonyi Hall 101 and Remote Access

Perverse sheaves and intersection cohomology are central objects in geometric representation theory. This talk is about their long-lost K-theoretic cousins, called K-motives. We will discuss definitions and basic properties of K-motives and explore...