Algebra, Combinatorics, and Geometry Archives

Date Speakers
Thursday, April 11, 2024 - 12:00 to 13:00
Where the tame tori are
Stephen DeBacker
University of Michigan
Thursday, April 4, 2024 - 12:00 to 13:00
Computing Crystalline Deformation Rings via the Taylor–Wiles–Kisin Patching Method
Chengyang Bao
University of Chicago
Thursday, March 28, 2024 - 12:00
Introduction to toric topology
Indira Zeinikesheva
University of Pittsburgh
Thursday, March 21, 2024 - 12:00 to 13:00
From Representations of Affine Algebras to the Quantum K-theory of Flag Manifolds and Combinatorics
Cristian Lenart
SUNY Albany
Thursday, March 7, 2024 - 15:00
Approximations by special values of the Riemann zeta function via cotangent integrals
Cezar Lupu
Beijing Institute of Mathematical Sciences and Applications
Thursday, February 29, 2024 - 12:00
Rees and multi-Rees algebras of direct sums of strongly stable ideals
Gabriel Sosa
Colgate University
Thursday, February 22, 2024 - 13:00 to 14:00
Using Heegaard Floer homology and dihedral covers to detect prime knots
Samantha Allen
Duquesne University
Thursday, February 15, 2024 - 12:00 to 13:00
Towers of function fields and a-numbers
Joe Kramer-Miller
Lehigh University
Thursday, February 8, 2024 - 12:00 to 13:00
On the moving sofa problem
Jineon Baek
University of Michigan
Thursday, January 11, 2024 - 12:00 to 13:00
Criteria for pseudo-representations to arise from genuine representations
Jinyue Luo
University of Chicago
Tuesday, January 9, 2024 - 12:00 to 13:00
Character varieties and pseudorepresentations
Carl Wang-Erickson
University of Pittsburgh
Thursday, December 7, 2023 - 12:00 to 13:00
What do we learn by formalizing differential topology?
Patrick Massot
CNRS/Paris-Saclay/CMU
Thursday, November 30, 2023 - 12:00 to 13:00
Notes on the fundamental lemma
Thomas Hales
University of Pittsburgh
Thursday, November 16, 2023 - 12:00 to 13:00
Introduction to geometric invariant theory
Kiumars Kaveh
University of Pittsburgh
Thursday, November 9, 2023 - 12:00 to 13:00
Normed homological algebra
Reid Barton
Carnegie Mellon University
Thursday, November 2, 2023 - 12:00 to 13:00
Cubical setting for discrete homotopy theory
Chris Kapulkin
Western University (Ontario)
Thursday, October 26, 2023 - 12:00 to 13:00
Converse theorems for representations of general linear groups over finite fields
Ashwin Iyengar
John Hopkins University
Thursday, October 19, 2023 - 12:00 to 13:00
Reflection theorems for number rings
Evan O'Dorney
Carnegie Mellon University
Thursday, October 12, 2023 - 12:00 to 13:00
Algebraic Structures in the Reinhardt Problem
Thomas Hales
University of Pittsburgh
Thursday, September 21, 2023 - 12:00 to 13:00
Cyclotomic subfields
Javier Gomez-Calderon
Point Park University
Thursday, September 14, 2023 - 12:00 to 13:00
h-vector inequalities for weak maps of matroids
Alex Mason
University of Washington
Thursday, September 7, 2023 - 12:00 to 13:00
Organizational meeting
Thursday, April 20, 2023 - 12:00 to 13:00
Mazur's main conjecture at Eisenstein primes
Francesc Castella
University of California - Santa Barbara
Thursday, April 13, 2023 - 12:00 to 13:00
Gauged Gromov-Witten theory and affine grassmannians
Andres Fernandez Herrero
Columbia University
Thursday, April 6, 2023 - 12:00 to 13:00
Around Hall algebras in 50 minutes
University of Pittsburgh
Thursday, March 30, 2023 - 12:00 to 13:00
Algebra, combinatorics, and geometry in skein theory
Peter Samuelson
UC Riverside
Wednesday, March 29, 2023 - 11:00 to 12:00
Lie theory in tensor categories with applications to modular representation theory
Pavel Etingof
MIT
Tuesday, March 21, 2023 - 12:00 to 13:00
Matroids and the geometry of toric vector bundles
Christopher Manon
University of Kentucky
Thursday, March 16, 2023 - 12:00 to 13:00
Rational torsion in modular Jacobians
Preston Wake
Michigan State University
Thursday, March 2, 2023 - 12:00 to 13:00
Geproci sets: an instance of a new perspective on classification in algebraic geometry
Brian Harbourne
University of Nebraska
Thursday, February 23, 2023 - 12:00 to 13:00
Splice type surface singularities and their local tropicalizations
María Angélica Cueto
Ohio State University
Thursday, February 16, 2023 - 12:00 to 13:00
Introduction to Matroids, Part II
Kiumars Kaveh
University of Pittsburgh
Thursday, February 9, 2023 - 12:00 to 13:00
Introduction to Matroids, Part I
Kiumars Kaveh
University of Pittsburgh
Thursday, February 2, 2023 - 12:00 to 13:00
Logarithmic connections and symmetries of bundles
Mainak Poddar
IISER Pune
Thursday, December 1, 2022 - 12:00 to 13:00
Viazovska’s work on sphere packings
Thomas Hales
Thursday, November 17, 2022 - 12:00
Viazovska’s work on sphere packings
Thomas Hales
Thursday, November 10, 2022 - 12:00
Blow Up Chemical Reaction Networks
Kuei-Nuan Lin
Penn State Greater Allegheny
Thursday, November 3, 2022 - 12:00 to 13:00
Making big graphs using small varieties
Boris Bukh
Carnegie Mellon University
Thursday, October 27, 2022 - 12:00 to 13:00
Let's count things
Theresa Anderson
Carnegie Mellon University
Thursday, October 13, 2022 - 12:00 to 13:00
Folded Galleries in Affine Buildings and Moduli of Curves on Flag Varieties
Elizabeth Milicevic
Haverford College
Thursday, October 6, 2022 - 12:00 to 13:00
The Borsuk-Ulam theorem in combinatorics and geometry
Florian Frick
Carnegie Mellon University
Thursday, September 29, 2022 - 15:00
On the generalized Ramanujan conjecture over function fields
Michael Harris
Columbia University
Thursday, September 22, 2022 - 12:00 to 13:00
An Introduction to the Langlands Program (part 2)
Carl Wang-Erickson
University of Pittsburgh
Thursday, September 15, 2022 - 12:00 to 13:00
An Introduction to the Langlands Program
Carl Wang-Erickson
University of Pittsburgh
Thursday, September 1, 2022 - 12:00 to 13:00
Organizational Meeting
Thursday, April 21, 2022 - 11:00
Zagier’s formula for multiple zeta values and its odd variant revisited
Cezar Lupu
Beijing Institute of Mathematical Sciences and Applications (BIMSA) & Yau Mathematical Sciences Center (YMSC), Tsinghua University
Thursday, April 14, 2022 - 11:00 to 12:00
Positivity in the quantum K theory of Grassmannians
Leonardo Mihalcea
Virginia Tech
Thursday, April 7, 2022 - 11:00
Moduli spaces of stable curves, Gromov-Witten varieties, and the quantum K-theory ring
Bogdan Ion
University of Pittsburgh
Thursday, March 31, 2022 - 11:00
Hyperelliptic curves, scanning, and moments of quadratic L-functions
Adrian Diaconu
University of Minnesota
Thursday, March 24, 2022 - 11:00
The moduli space of pointed hyperelliptic curves over finite fields
Bogdan Ion
University of Pittsburgh
Thursday, March 3, 2022 - 11:00
Images of skyscraper sheaves on toric resolutions: cohomology distribution
University of Pittsburgh
Thursday, January 13, 2022 - 11:00
Toroidal b-divisors and Monge-Ampère measures
Ana Botero
University of Regensburg
Thursday, December 2, 2021 - 11:00
On the purity conjecture of Nisnevich for torsors under reductive group schemes
Roman Fedorov
University of Pittsburgh
Thursday, November 18, 2021 - 11:00
Phylogenetic Networks
Joseph Cummings
University of Kentucky
Thursday, November 4, 2021 - 11:00
Extending results of Cayley, Kirchhoff and Tutte
Gregory M. Constantine
Thursday, October 28, 2021 - 11:00
The geometric cobordism hypothesis
Daniel Grady
Texas Tech University
Thursday, October 14, 2021 - 12:00
Modular Forms, Galois Representations, and Cohomology of Line Bundles
Aleksander Horawa
University of Michigan
Thursday, September 23, 2021 - 11:00
Toric schemes over a DVR, vector bundles and affine buildings
Kiumars Kaveh
Thursday, April 15, 2021 - 13:00
Prime tropical ideals
Kalina Mincheva
Tulane University
Thursday, April 8, 2021 - 13:00
Horoball packing, hidden symmetry and some tetrahedral links
University of Pittsburgh
Thursday, April 1, 2021 - 13:00
The Weil Conjectures (Cont.)
Carl Wang-Erickson
University of Pittsburgh
Thursday, March 25, 2021 - 13:00
The Weil Conjectures (Cont.)
Carl Wang-Erickson
University of Pittsburgh
Thursday, March 18, 2021 - 13:00
The Weil Conjectures
Carl Wang-Erickson
University of Pittsburgh
Thursday, March 11, 2021 - 13:00
Graphs of maximal complexity
Gregory M. Constantine
University of Pittsburgh
Thursday, March 4, 2021 - 13:00
Counting G-bundles over projective line
University of Pittsburgh
Thursday, February 25, 2021 - 13:00
On combinatorics of Arthur's trace formula, convex polytopes, and toric varieties
Kiumars Kaveh
University of Pittsburgh
Thursday, February 18, 2021 - 13:00
The Cusp Parameter Function on a Hyperbolic 3-Manifold Deformation Variety: An Example, Part 2
Jason DeBlois
University of Pittsburgh
Thursday, February 11, 2021 - 13:00
The Cusp Parameter Function on a Hyperbolic 3-Manifold Deformation Variety: An Example
Jason DeBlois
University of Pittsburgh
Thursday, February 4, 2021 - 13:00
On G-Hilbert Schemes and McKay Correspondence, Pt. 2
University of Pittsburgh
Thursday, January 28, 2021 - 13:00 to 14:00
On G-Hilbert schemes and McKay correspondence
University of Pittsburgh
Thursday, March 26, 2020 - 12:00
TBA
Milena Wrobel
University of Oldenburg
Monday, March 23, 2020 - 15:30
Rigid Cocycles and Their Arithmetic
Jan Vonk
Institute for Advanced Study
Thursday, March 5, 2020 - 12:00
On the cohomology of congruence subgroups of GL_3 over imaginary quadratic fields
Dan Yasaki
University of North Carolina at Greensboro
Thursday, February 27, 2020 - 13:30
Betti numbers and equivariant free resolutions of star configurations
Federico Galetto
Cleveland State University
Thursday, February 27, 2020 - 12:00
Varieties of Signature Tensors
Bernd Sturmfels
UC Berkeley and Max Planck Institute
Thursday, February 20, 2020 - 12:00
K-theory of toric varieties
Aniket Shah
Ohio State University
Thursday, February 13, 2020 - 12:00 to 13:00
Macdonald polynomials and level two Demazure modules for affine sl(n+1)
Rekha Biswal
Max Plank Institute, Bonn
Thursday, February 6, 2020 - 12:00
Conductors and Minimal Discriminants of Hyperelliptic Curves
Padmavathi Srinivasan
University of Georgia
Thursday, January 30, 2020 - 12:00 to 13:00
Classification of the irreducible representations of braid groups
Inna Sysoeva
Binghampton University
Thursday, January 23, 2020 - 12:00
Equivariant cohomology, momentum graphs and Chinese remainder theorem (cont'd)
Kiumars Kaveh
Thursday, January 16, 2020 - 12:00 to 13:00
Equivariant cohomology, momentum graphs and Chinese remainder theorem
Kiumars Kaveh
Thursday, January 9, 2020 - 12:00
Applications of DG Homological Algebra in Commutative Algebra
Saeed Nasseh
Georgia Southern University
Thursday, December 5, 2019 - 12:00
Keller's Conjecture
John Mackey
Thursday, November 21, 2019 - 12:00
Empirical Families of Number Fields
Ken Manders
University of Pittsburgh
Thursday, November 14, 2019 - 12:00
Serre weight conjectures for unitary groups
Karol Koziol
Thursday, November 7, 2019 - 12:00
Homotopy Canonicity of Homotopy Type Theory
Chris Kapulkin
Western University
Thursday, October 17, 2019 - 12:00
On extremal spectra and geometric symmetry in finite structures, with applications
Gregory M. Constantine
University of Pittsburgh
Thursday, October 3, 2019 - 12:00
Counting words using the Euler characteristic
Reid Barton
University of Pittsburgh
Thursday, September 26, 2019 - 12:00
On non-computable problems in computer assisted proofs - Why foundations of computations may interest pure mathematicians
Anders Hansen
University of Cambridge
Thursday, September 19, 2019 - 12:00
Toric Ideals of Graphs
Jennifer Biermann
Hobart and William Smith Colleges
Thursday, September 12, 2019 - 12:00
Modular Forms and Arithmetic
Carl Wang-Erickson
Tuesday, April 9, 2019 - 12:00
TBA
Mahdi Majidi
Tuesday, April 9, 2019 - 12:00
TBA
Mahdi Majidi
Thursday, April 4, 2019 - 12:00
A formalization of forcing and the consistency of the failure of the continuum hypothesis
Jesse Han
Thursday, March 7, 2019 - 12:00 to 13:00
Multiplicity-Free Products of Schubert Divisors and an Application to Canonical Dimension
Rostislav Devyatov
University of Alberta
Wednesday, February 27, 2019 - 12:00
TBA
Federico Galetto
Cleveland State University
Thursday, February 14, 2019 - 12:00
Atiyah Class and Sheaf Counting on Local Calabi-Yau Fourfolds
Artan Sheshmani
Harvard University, Center for Mathematical Sciences and Applications
Thursday, December 6, 2018 - 12:00
Hyperplane Arrangements and Compactifying the Milnor Fiber
Jeremy Usatine
Yale University
Thursday, November 29, 2018 - 13:00 to 14:00
Toward double affine flag varieties and Grassmannians
Dinakar Muthiah
Kavli IPMU Tokyo
Thursday, November 29, 2018 - 12:00
Toric degenerations of the algebra of conformal blocks and compactifications of character varieties
Chris Manon
University of Kentucky