Algebraic Geometry Learning Seminar: Admissible resolutions
Hyunsuk Kim
Discuss the material in Section 4 of the paper. The main goals are to explain the statement of Theorem 3.15, to sketch the ideas in the...
Graduate Admissions Visit Days
The Mathematics Department will be hosting prospective Fall 2026 PhD students. There will be a series of lectures and activities on Friday,...
Graduate Admissions Visit Days
The Mathematics Department will be hosting prospective Fall 2026 PhD students. There will be a series of lectures and activities on Friday, March 20 and Saturday, March 21. A detailed agenda is below:
Friday March 20 Schedule of Events...
On Fox’s trapezoidal conjecture (Combinatorics Seminar)
Karola Mészáros (Cornell)
Fox’s trapezoidal conjecture from 1962 states that the absolute values of the coefficients of the Alexander polynomial of alternating...
Student Algebraic Geometry: Brauer Groups, Twisted Sheaves, and Geometric Realizations of Cohomology Classes
Jacob Zweifler
A recurring theme in algebraic geometry is that cohomology classes often have concrete geometric realizations. In this talk, I will discuss...
AIM Seminar: Particle Mechanics Applications to Hazards in Civil Engineering
Estéfan Garcia (University of Michigan)
Abstract: Many of the natural hazards that threaten infrastructure and communities are driven by particulate interactions and particle...
Graduate Admissions Visit Days
The Mathematics Department will be hosting prospective Fall 2026 PhD students. There will be a series of lectures and activities on Friday,...
GLNT: Algebraic theory of indefinite theta functions
Kenz Kallal (Princeton)
Abstract: Jacobi's theta function $\Theta(q) := 1 + 2q + 2q^4 + 2q^9 + \cdots $, and more generally the theta functions associated to...
Colloquium: Homological stability of moduli spaces
Dan Petersen, Stockholm University
Homological stability has emerged over the past decades as an organizing principle in topology and beyond. Broadly speaking, many sequences...
Michigan Lectures in Algebraic Geometry and Topology: Stable homology of moduli spaces and moments in families of L-functions over function fields
Dan Petersen (Stockholm U.)
In recent years, several problems in arithmetic statistics that seem completely intractable over number fields, have been resolved in the...
Mean–Variance Portfolio Selection by Continuous-Time Reinforcement Learning: Algorithms, Regret Analysis, and Empirical Study
Xunyu Zhou, Columbia University
We study continuous-time mean–variance portfolio selection in markets where stock prices are diffusion processes driven by observable...
Mean Field Control and Applications in Modern Machine Learning
Qinxin Yan, Princeton
In this talk, I will introduce mean field control and discuss its applications in modern machine learning. I will first describe how...
Student Real Analysis Reading Group
The Student Real Analysis Reading Group facilitated by Siwei Wang will meet every Thursday from 2:30–4:30 PM in East Hall 5822 from...
Michigan Lectures in Algebraic Geometry and Topology: Stable homology of moduli spaces and moments in families of L-functions over function fields
Dan Petersen (Stockholm U.)
In recent years, several problems in arithmetic statistics that seem completely intractable over number fields, have been resolved in the...
DE Seminar: Smooth and swirling steady vortex rings near the Hill - Norbury Family
Noah Stevenson, Princeton University
Hill's spherical vortex is a classical explicit solution to the three dimensional Euler equations. It is an axisymmetric and swirl-free...
Twists, Higher Dimer Covers, and Web Duality for Grassmannian Cluster Algebras (Combinatorics)
Gregg Musiker (University of Minnesota)
We study a twisted version of Fraser, Lam, and Le's higher boundary measurement map, using face weights instead of edge weights,...
Michigan Lectures in Algebraic Geometry and Topology: Stable homology of moduli spaces and moments in families of L-functions over function fields
Dan Petersen (Stockholm U.)
In recent years, several problems in arithmetic statistics that seem completely intractable over number fields, have been resolved in the...
GLNT: How you think on a function defined on 0,1,…,N-1?
Shamgar Gurevich (University of Wisconsin--Madison)
Abstract: Between thousand to million times per day, your cellphone calculates the Fourier Transform (FT) of certain complex valued...
Graphical Description of Biochemical Systems via Reaction Networks
Jinsu Kim
A reaction network is a graphical configuration that can describe many biochemical systems with interactions between species (molecules). If...
Colloquium: Randomized algorithms for very large scale linear algebra
Per-Gunnar Martinsson, University of Texas at Austin
The talk will describe how randomized algorithms can effectively, accurately, and reliably solve linear algebraic problems that are...
Algebraic Geometry Learning Seminar: From algebraicity to quadratic splittings of matroids
Mircea Mustata
Explain the proof of the key geometric result (Theorem 1.8 of the paper) behind the main theorem.
Colloquium: Intrinsic dual symplectic dynamics in quasiperiodic spectral theory
Svetlana Jitomirskaya, UC Berkeley
Quasiperiodic Schrödinger operators are simple deterministic models of quantum motion that nevertheless exhibit strikingly complicated...
Robust and Risk-Sensitive Acceleration in Gradient Methods
Mert Gurbuzbalaban, Rutgers
First-order methods such as gradient descent (GD) are foundational in optimization. In unconstrained problems with exact gradients,...
Student Real Analysis Reading Group
The Student Real Analysis Reading Group facilitated by Siwei Wang will meet every Thursday from 2:30–4:30 PM in East Hall 5822 from...
Algebraic Geometry Learning Seminar: Albanese graphs
Sam Payne
Discuss the material in Section 5 of the paper. In particular, define Albanese graphs, prove their universal property, and give some...
RTG NT:
3.3-3.4 of Darmon-Vonk
Representation stability via Young symmetrizers and a new ribbon basis for the rank-selected homology of the partition lattice (Combinatorics seminar)
Patricia Hersh (University of Oregon)
In this talk, we will begin with a quick review of group actions on posets, rank-selected homology of posets, representation stability, and...
GLNT: Propagating congruences in the local Langlands program
Sean Cotner
Abstract: I will describe recent work-in-progress with Tony Feng in which we compare the Fargues–Scholze local Langlands correspondence to...
IBL Lunch
Come talk about teaching with IBL, interactive, and other active teaching methods over lunch. Bring teaching anecdotes, thoughts, and your...
Colloquium: Total positivity: combinatorics, geometry, and representation theory
Xuhua He, University of Hong Kong
An invertible matrix is called totally positive if all of its minors are positive. Over the past several decades, this classical notion has...
Stochastic Kernel Topologies and Implications for Approximations, Robustness, and Learning
Serdar Yuksel, Queens University
Stochastic kernels represent system models, control policies, and measurement channels, and thus offer a general mathematical framework. We...
