Algebra, Combinatorics, and Geometry Archives
| Date | Speakers | |
|---|---|---|
|
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 | |
|
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
|
|
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 3-manifold topology |
Jason DeBlois
|
|
Thursday, September 20, 2018 - 12:00
|
Cartan decomposition and K-orbits 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 Gelfand-Zetlin 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 three-dimensional Ferrers diagrams |
Kuei-Nuan 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
|
Scaling-rotation 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
|
Bott-Samelson 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 anti-canonical 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 Hurwitz-zeta 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 2-affine braid groups |
Bogdan Ion
|
|
Thursday, February 23, 2017 - 12:00
|
n-affine 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 Wisconsin-Madison
|
|
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, p-adic, 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 p-adic fields | |
|
Thursday, September 8, 2016 - 12:00
|
The optimal packing of congruent regular pentagons in the plane | |
|
Thursday, August 25, 2016 - 12:00
|
Configurations of Spheres |
Woden Kusner
Graz University of Technology
|
|
Thursday, April 21, 2016 - 12:00
|
The representation problem for ternary quadratic polynomials. |
Anna Haensch
Duquesne University
|
|
Thursday, April 14, 2016 - 12:00
|
Cubical sets with symmetries and the homotopy coherent nerve functor |
Chris Kapulkin
|
|
Thursday, March 31, 2016 - 12:00
|
Fisher information and the discrete Laplacian, with applications | |
|
Thursday, March 24, 2016 - 12:00
|
Tropical geometry and Grobner theory for spherical homogeneous spaces | |
|
Thursday, March 17, 2016 - 12:00
|
Generalized Riemannian geometry | |
|
Thursday, March 3, 2016 - 12:00 to 13:00
|
Noncommutative Symmetric Groups in Noncommutative Projective Algebraic Geometry |
Xingting Wang
Temple University
|
|
Thursday, February 25, 2016 - 12:00
|
Springer W-action and equivariant cohomology | |
|
Thursday, January 14, 2016 - 13:00 to 14:00
|
Affine Lie algebras, quantum K-theory, and combinatorics |
Cristian Lenart
SUNY Albany
|
|
Tuesday, December 15, 2015 - 12:00
|
Congruent relations, cyclotomic expansion and volume conjecture for SU(n) invariants |
Shengmao Zhu
Zhejiang University
|
|
Thursday, December 10, 2015 - 12:00 to 13:00
|
Systoles of arithmetic hyperbolic manifolds |
Ben McReynolds
Purdue
|
|
Thursday, December 3, 2015 - 12:00
|
Bergman kernel and invariant theory | |
|
Thursday, November 19, 2015 - 12:00
|
Special complex structures and their deformation properties: Hodge numbers and stability |
Sheng Rao
University of California, Los Angeles
|
|
Thursday, November 12, 2015 - 12:00
|
Commutative Character Sheaves | |
|
Thursday, November 5, 2015 - 12:00
|
Hilbert schemes and parking functions |
Andrei Neguț
MIT
|
|
Thursday, October 22, 2015 - 12:00
|
The representation theory of sphere packings | |
|
Thursday, October 15, 2015 - 12:00
|
The Kudla Program |
Zavosh Amir-Khosravi
|
|
Thursday, October 8, 2015 - 12:00
|
Toric degenerations and symplectic geometry of projective varieties II | |
|
Thursday, October 1, 2015 - 12:00
|
Toric degenerations and symplectic geometry of projective varieties |
<p>The purpose of this talk is to discuss some recent general results about symplectic geometry of smooth projective varieties using toric degenerations (motivated by commutative algebra). The main result is the following: Let X be a smooth n-dimensional complex projective variety embedded in a projective space and equipped with a Kahler structure induced from a Fubini-Study Kahler form. We show that for any \epsilon>0 the manifold X has an open subset U (in the usual topology) such that vol(X \ U) < \epsilon and moreover U is symplectomorphic to the algebraic torus (\C^*)^n equipped with a toric Kahler form. The proof is based on construction of a toric degeneration of X. As applications we obtain lower bounds on the Gromov width of X. Moreover, we show that X has a full symplectic ball packing by d balls of capacity 1 where d is the degree of X.</p>
4
|
|
Thursday, October 1, 2015 - 12:00
|
Toric degenerations and symplectic geometry of projective varieties | |
|
Thursday, September 24, 2015 - 12:00
|
On the Schwartz space of a smooth semi-algebraic stack |
Yiannis Sakellaridis
Rutgers University
|
|
Thursday, September 24, 2015 - 12:00
|
On the Schwartz space of a smooth semi-algebraic stack |
Yiannis Sakellaridis
Rutgers University
|
|
Thursday, September 10, 2015 - 12:00
|
Computing p-adic families of modular symbols | |
|
Thursday, April 2, 2015 - 12:00
|
Introduction to factorization homology |
Chris Kapulkin
University of Western Ontario
|
|
Thursday, April 2, 2015 - 12:00
|
Introduction to factorization homology |
Chris Kapulkin
University of Western Ontario
|
|
Thursday, March 26, 2015 - 12:00
|
Tautological ring of moduli spaces of curves | |
|
Thursday, March 19, 2015 - 12:00
|
Macdonald conjectures for multivariate hypergeometric functions |
Siddhartha Sahi
Rutgers University, New Brunswick
|
|
Thursday, March 19, 2015 - 12:00
|
Macdonald conjectures for multivariate hypergeometric functions |
Siddhartha Sahi
Rutgers University, New Brunswick
|
|
Tuesday, March 17, 2015 - 12:00
|
Generalized Whittaker functionals for real reductive groups |
Siddhartha Sahi
Rutgers University, New Brunswick
|
|
Thursday, March 5, 2015 - 12:00
|
Stability conditions for sub-quotients of category O |
Vinoth Nandakumar
MIT
|
|
Wednesday, February 25, 2015 - 12:00
|
Springer W-action and equivariant cohomology | |
|
Thursday, February 19, 2015 - 12:00
|
The 290-Theorem and Representing Numbers by Quadratic Forms |
Jonathan Hanke
|
|
Thursday, February 5, 2015 - 12:00
|
The maximum injectivity radius of hyperbolic 2-orbifolds |
Federica Fanoni
University of Fribourg
|
|
Thursday, January 29, 2015 - 12:00
|
Serre's tensor construction and moduli of abelian schemes - Part 2 |
Zavosh Amir-Khosravi
|
|
Thursday, January 29, 2015 - 12:00
|
Serre's tensor construction and moduli of abelian schemes - Part 2 |
Zavosh Amir-Khosravi
|
|
Thursday, January 22, 2015 - 12:00
|
Serre's tensor construction and moduli of abelian schemes |
Zavosh Amir-Khosravi
|
|
Thursday, January 15, 2015 - 12:00
|
Tropical geometry |