Department of Mathematics Colloquium

2023-2024

Time Location Colloquium Chair
Thursdays — 4:00pm–5:00pm AP&M 6402 (unless otherwise stated) Ioan Bejenaru (ibejenaru@ucsd.edu)

Fall 2023

Date Speaker Title + Abstract Host
November 2 Aaron Naber
Northwestern University
Ricci Curvature, Fundamental Group and the Milnor Conjecture
Abstract
Lei Ni
November 8 (Time: 3-4pm) Morris Ang
Columbia University
Random conformal geometry
Abstract
Tianyi Zheng
November 9 Shou-Wu Zhang
Princeton University
Heights of Gross—Schoen cycles and the uniform Mordell—Lang conjecture
Abstract
Cristian Popescu
November 16 Yi Lai
Stanford University
Ricci flow and Hamilton's flying wing Conjecture
Abstract
Luca Spolaor
November 20 Jacopo Borga
Stanford University
Permutations in Random Geometry
Abstract
Todd Kemp
November 21 Christoph Kehle
ETH
On the dynamical formation and interior structure of black holes
Abstract
Luca Spolaor
November 27 Lucas Mason-Brown
University of Oxford
Unitary representations of semisimple Lie groups and conical symplectic singularities
Abstract
Steven Sam
November 28 (time 3pm) Sifan Liu
Stanford University
An Exact Sampler for Inference after Polyhedral Selection
Abstract
Ery Arias-Castro
November 30 (time 3pm) Zhipeng Lou
University of Pittsburgh
Ranking Inference Based on Multiway Comparisons
Abstract
Jelena Bradic
November 30 (time 4:15pm) Kristin DeVleming
UMass Amherst
Comparing compactifications of moduli spaces
Abstract
James McKernan
December 4 Yuanzhao Zhang
Sante Fe Institute
Twists, triangles, and tentacles: A guided tour of high-dimensional basins in networked dynamical systems
Abstract
Natalia Komarova
December 5 Federico Pasqualotto
UC Berkeley
From Instability to Singularity Formation in Incompressible Fluids
Abstract
Luca Spolaor
December 6 Vishal Patil
Stanford University
Topology, geometry and adaptivity in soft and living matter
Abstract
Bo Li
December 7 (3-4pm) Tianhao Wang
Yale
Algorithm Dynamics in Modern Statistical Learning: Universality and Implicit Bias
Abstract
Ery Arias-Castro
December 7 (4:15-5:15pm) Zhimeng Ouyang
University of Chicago
Continuum Limit for Integrable Lattice Models
Abstract
Luca Spolaor
December 11 (2pm) Pearson Miller
Flatiron Institute, Simons Foundation
Can a cell know its shape? Unraveling the role of domain geometry in a non-local reaction-diffusion model
Abstract
Bo Li
December 11 Shuangning Li
Harvard
TBD
Abstract TBD
Jelena Bradic
December 12 (Time: 3-4pm) Lijun Ding
University of Wisconsin-Madison
Optimization for statistical learning with low dimensional structure: regularity and conditioning
Abstract
Rayan Saab

Winter 2024

Date Speaker Title + Abstract Host
January 8 Michael Celentano
UC Berkeley
Debiasing in the inconsistency regime
Abstract
Ery Arias-Castro
January 11 Dmitriy Drusviatskiy
University of Washington
Optimization for large-scale learning: beyond smoothness and convexity
Abstract
Ery Arias-Castro
January 16 (3pm) Ruobing Zhang
Princeton
Metric geometric aspects of Einstein manifolds
Abstract
Luca Spolaor
January 17 (3pm) Adrian Gonzalez Casanova
UC Berkeley
(Markov) Duality
Abstract
Natalia Komarova
January 17 (4:15pm) Or Hershkovits
Hebrew University of Jerusalem
Mean curvature flow in spaces with positive cosmological constant
Abstract
Luca Spolaor
January 18 Robert Webber
Caltech
Randomized matrix decompositions for faster scientific computing
Abstract
Rayan Saab
January 19 Christopher Eur
Harvard
Geometry of independence
Abstract
Brendon Rhoades
January 22 (3pm) Subha Maity
Univ. of Michigan
Investigations of algorithmic biases caused by underrepresentation of minority groups
Abstract
Jelena Bradic
January 22 (4:15pm) Harold Blum
University of Utah
Moduli of Fano varieties and K-stability
Abstract
Dragos Oprea
January 23 Andrew Lawrie
MIT
Continuous bubbling for the harmonic map heat flow
Abstract
Ioan Bejenaru
January 25 (3pm) Uri Bader
Weizmann Institute of Science
Cohomology of Arithmetic Groups, Higher Property T and Spectral Gap
Abstract
Adrian Ioana
January 25 (4:15 pm) Sen Na
UC Berkeley
Practicality meets Optimality: Real-Time Statistical Inference under Complex Constraints
Abstract
Rayan Saab
January 30 (Zoom only, see abstract for details) Angxiu Ni
Yau Mathematical Sciences Center, Tsinghua University, China
Backpropagation and adjoint differentiation of chaos
Abstract
Bo Li
February 1 (3pm) Daren Wang
University of Notre Dame
Nonparametric Estimation via Variance-Reduced Sketching
Abstract
Ery Arias-Castro
February 5 Park Chan
TBD
Single Proxy (Synthetic) Control
Abstract
Jelena Bradic
February 7 Dmitriy Kunisky
Yale
The computational cost of detecting hidden structures: from random to deterministic
Abstract
Rayan Saab
February 14 Fay Dowker
Imperial College London
Combinatorial Geometry: a tale of two signatures
Abstract
David Meyer
February 15 (10am) Lili Zheng
Rice University
Uncertainty Quantification for Interpretable Machine Learning
Abstract
Ery Arias-Castro
February 15 (2pm) Yuchen Zhou
University of Pennsylvania
Towards More Reliable Tensor Learning
Abstract
Jelena Bradic
February 15 Nigel Goldenfeld
UCSD
Topological scaling laws and the mathematics of evolution
Abstract
Natalia Komarova
February 22 Ivan Corwin
Columbia University
Title TBD
Abstract TBD
Ioana Dumitriu
February 29 Tamás Terlaky
Lehigh University
Title TBD
Abstract TBD
Jiawang Nie
March 7 Gunther Uhlmann
University of Washington
Title TBD
Abstract TBD
Ioan Bejenaru

Spring 2024

Date Speaker Title + Abstract Host
April 4 Mikael de la Salle
CNRS, Lyon and IAS
Fourier Analysis with arithmetic groups
Abstract
Adrian Ioana
April 11 Ilijas Farah
York University
CORONA RIGIDITY
Abstract
Adrian Ioana
April 24 Tsachik Gelander
Northwestern University
Things we can learn by looking at random manifolds
Abstract
Alireza Golsefidy
May 2 Weng Kee Wong
UCLA
Using Animal Instincts to Find Optimal Designs for Early Phase Clinical Trials
Abstract
Yuhua Zhu
May 16 Paul Newton
University of Southern California
Title TBD
Abstract TBD
Natalia Komarova
May 30 Ellen Eischen
University of Oregon
Title TBD
Abstract TBD
Kiran Kedlaya
June 6 Yoichiro Mori
University of Pennsylvania
Title TBD
Abstract TBD
Bi Li