This website uses features that are not well-supported by your browser. Please consider upgrading to a browser and version that fully supports CSS Grid and the CSS Flexible Box Layout Module.
Edit Calendar
Sidebar image

Prev. week | Oct 26 – Nov 1, 2025 | Next week


Sunday,
October 26
new
Monday,
October 27
15:30–16:30 Algebra and Number Theory Seminar, Kemeny 343  edit delete
Low-degree points on some rank 0 modular curves
Alexis Newton, Augusta University
Let $E$ be an elliptic curve defined over a number field $K$. We present some new progress on the classification of the finite groups which appear as the torsion subgroup of $E(K)$ as $K$ ranges over quartic, quintic and sextic number fields. In particular, we concentrate on determining the quartic, quintic and sextic points on certain modular curves $X_1(N)$ for which the rank of $J_0(N)$ is zero.
17:00–18:00 Undergraduate Math Society Talk, Kemeny 007  edit delete
CANCELLED
Juliette Bruce, Dartmouth College
new
Tuesday,
October 28
11:00–12:00 Combinatorics Seminar, Kemeny 307  edit delete
Bruhat interval polytopes and posets arising as 1-skeleta of (directionally) simple polytopes
Patricia Hersh, University of Oregon
Questions regarding the complexity of the simplex method in linear programming for simple polytopes turn out to be related to questions about partially ordered sets in a perhaps surprising way. Exploring this connection led us to study lattices arising as 1-skeleta of simple polytopes, obtaining the homotopy type of the intervals in these posets as well as a geometric way of constructing lattice-theoretic joins. In recent joint work with Christian Gaetz, we generalized this to the setting of directionally simple polytopes, motivated by questions about Bruhat interval polytopes. We also proved that the facet ridge incidence graphs of the order complexes of these posets are not only connected but in fact highly connected. This talk will not assume background in this area and will mention several remaining open questions.
14:30–15:30 Applied and Computational Mathematics Seminar, Kemeny 242  edit delete
Privacy-preserving probabilistic machine learning: a preview
Nianqiao "Phyllis" Ju, Dartmouth
This talk is a preview of Math 146 in Winter 2026, which will focus on privacy-preserving probabilistic machine learning. The central goal is to learn about populations without revealing any sensitive information about any individual. We will give an accessible introduction to the definition of differential privacy, the randomized response mechanism, and the high-level ideas of differentially private optimization and sampling. No specialized background beyond probability and basic data analysis or machine learning is required. The goal is to provide a clear picture of what is currently possible and key open problems for further study. This will be a mostly nontechnical chalk talk.
15:30–16:30 Functional Analysis Seminar, Kemeny 343  edit delete
On Prequantization of Log-Symplectic Manifolds
Ahmad Reza Haj Saeedi Sadegh, Dartmouth College
We discuss a new approach to the geometric quantization of log symplectic manifolds using Lie groupoids and Lie algebroids. We will bridge the notion of prequantizability of Crainic for Lie algebroids and the prequantizability defined in the works of Lin-Loizides-Sjamaar-Song, Braverman-Loizides-Song, and Guillemin-Miranda-Weitsman. We then give a generalized geometric quantization method which allows for Poisson manifolds with a more complicated vanishing locus.
new
Wednesday,
October 29
new
Thursday,
October 30
new
Friday,
October 31
new
Saturday,
November 1
new

Prev. week | October 26 – November 1, 2025 | Next week