Algebra, Combinatorics, and Geometry Archives
Date  Speakers  

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, GromovWitten varieties, and the quantum Ktheory ring 
Bogdan Ion
University of Pittsburgh

Thursday, March 31, 2022  11:00

Hyperelliptic curves, scanning, and moments of quadratic Lfunctions 
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 
Boris Tsvelikhovsky
University of Pittsburgh

Thursday, January 13, 2022  11:00

Toroidal bdivisors and MongeAmpère 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 WangErickson
University of Pittsburgh

Thursday, March 25, 2021  13:00

The Weil Conjectures (Cont.) 
Carl WangErickson
University of Pittsburgh

Thursday, March 18, 2021  13:00

The Weil Conjectures 
Carl WangErickson
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 Gbundles 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 3Manifold Deformation Variety: An Example, Part 2 
Jason DeBlois
University of Pittsburgh

Thursday, February 11, 2021  13:00

The Cusp Parameter Function on a Hyperbolic 3Manifold Deformation Variety: An Example 
Jason DeBlois
University of Pittsburgh

Thursday, February 4, 2021  13:00

On GHilbert Schemes and McKay Correspondence, Pt. 2 
Boris Tsvelikhovsky
University of Pittsburgh

Thursday, January 28, 2021  13:00 to 14:00

On GHilbert schemes and McKay correspondence 
Boris Tsvelikhovsky
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

Ktheory 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 noncomputable 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 WangErickson

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

MultiplicityFree 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 CalabiYau 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

Thursday, November 15, 2018  12:00

Geometric approach to linear ODEs 
Dima Arinkin

Thursday, November 8, 2018  12:00

A Verified ODE Solver and Smale's 14th Problem 
Fabian Immler
Carnegie Mellon University

Thursday, October 25, 2018  12:00

Singular Fano Varietes 
Alexander Borisov

Thursday, October 18, 2018  12:00

Cubical sets and higher category theory 
Chris Kapulkin
University of Western Ontario

Thursday, October 11, 2018  12:00

On the statement of the classification of finite simple groups. 
Thomas Hales

Thursday, October 4, 2018  12:00

Coherent Satake Functor 
Roman Fedorov

Thursday, September 27, 2018  12:00

Character variety methods in 3manifold topology 
Jason DeBlois

Thursday, September 20, 2018  12:00

Cartan decomposition and Korbits in spherical varieties 
Kiumars Kaveh

Thursday, April 19, 2018  12:00

Counting cusp forms on Sp(4) 
Mahdi Asgari
Oklahoma State University

Thursday, April 12, 2018  12:00

Virtual GelfandZetlin Polytopes 
Elise Villella

Thursday, April 5, 2018  12:00

The real projective spaces in homotopy type theory 
Egbert Rijke
Carnegie Mellon University

Thursday, March 15, 2018  13:00

Combinatorics of canonical bases and cluster duality 
Bea Schumann

Thursday, March 1, 2018  12:00

Algebraic structures from dependent type theory 
Clive Newstead
Carnegie Mellon University

Thursday, February 22, 2018  12:00

Macdonald polynomial operators and coinvariant rings 
James Haglund
University of Pennsylvania

Thursday, February 15, 2018  13:00

Toric vector bundles and buildings  
Thursday, February 8, 2018  12:00

Koszul blowup algebras associated to threedimensional Ferrers diagrams 
KueiNuan Lin
Penn State University

Tuesday, January 30, 2018  12:00

The Fourier Coefficients of a Minimal Parabolic Eisenstein Series on the Double Cover of GL(3) over Q. 
Edmund Karasiewicz
University of California, Santa Cruz

Thursday, December 7, 2017  12:00

Computing with higher genus curves, abelian varieties and K3 surfaces  
Thursday, November 30, 2017  12:00

Scalingrotation statistics on symmetric positive definite matrices 
Sungkyu Jung
University of Pittsburgh

Thursday, November 16, 2017  12:00

Consequences of the Uniform Position Principle for Spanning Lattice Polytopes 
Johannes Hofscheier
McMaster University

Thursday, November 9, 2017  12:00

Mining ultraproduct proofs for bounds in polynomial rings 
William Simmons
University of Pennsylvania

Thursday, November 2, 2017  13:00

BottSamelson varieties 
Laura Escobar
UIUC

Thursday, October 26, 2017  12:00

Formal Abstracts in Mathematics  
Thursday, October 19, 2017  12:00

Integrating over Hilbert schemes 
Andras Szenes

Thursday, October 12, 2017  12:00

Convolution numbers  
Thursday, October 5, 2017  12:00

Ranks of matrices with few distinct entries 
Boris Bukh
Carnegie Mellon University

Thursday, September 28, 2017  13:00

Linear families of polytopes and a notion of anticanonical class  
Thursday, September 21, 2017  12:00

Formalized Spectral Sequences in Homotopy Type Theory II 
Floris van Doorn
Carnegie Mellon University

Thursday, September 14, 2017  12:00

Formalized Spectral Sequences in Homotopy Type Theory I 
Floris van Doorn
Carnegie Mellon University

Thursday, September 7, 2017  12:00

Toric degenerations of Projective Varieties  
Thursday, April 13, 2017  12:00 to 13:00

Looking for Keller maps: a report on the hunt 
Alexander Borisov

Thursday, April 6, 2017  12:00 to 13:00

Multiple zeta values and multiple Hurwitzzeta values. Analytic and combinatorial aspects 
Cezar Lupu
University of Pittsburgh

Thursday, March 16, 2017  12:00 to 13:00

Curves on algebraic surfaces and hyperbolic codes 
Matt Stover
Temple University

Thursday, March 2, 2017  12:00

Congruence group actions on 2affine braid groups 
Bogdan Ion

Thursday, February 23, 2017  12:00

naffine braid groups 
Bogdan Ion

Thursday, February 9, 2017  12:00

Reinhardt conjecture as a problem in optimal control theory 
Thomas Hales

Thursday, January 26, 2017  12:00

Motivic class of moduli of Higgs bundles, Part 2  
Thursday, January 19, 2017  12:00

Motivic class of moduli of Higgs bundles  
Thursday, November 10, 2016  12:00 to 13:00

A geometric perspective on Landau's theorem in function fields 
Vlad Matei
University of WisconsinMadison

Thursday, October 27, 2016  12:00

The fundamental lemma for Hecke algebras in large positive characteristic  
Thursday, October 20, 2016  12:00

Quantitative Characterization of Finite Simple Groups and Related Topics 
Wujie Shi
Chongqing University of Arts & Sciences and Suzhou University

Thursday, October 13, 2016  12:00

Geometry of planar surfaces and exceptional fillings 
Neil Hoffman
Oklahoma State University

Thursday, October 6, 2016  12:00

Optimal partition problems 
Marco Caroccia
Carnegie Mellon University

Tuesday, September 20, 2016  12:00

Real, padic, and motivic (oscillatory) integrals and applications 
Raf Cluckers
CRNS (Le Centre national de la recherche scientifique), France

Thursday, September 15, 2016  12:00

Algebraic tori and counting padic fields 