DATE	SPEAKER	TITLE (click for an abstract)
February 3rd	Rekha Biswal MPIM Bonn	Macdonald polynomials and level two Demazure modules for affine sl_{n+1}
February 10th	Graham GordonUniversity of Washington	Cycle type factorizations in GL_n F_q
February 17th	President's day
February 24th	Nicolle Gonzalez MSRI and UCLA	Crystals for nonsymmetric Macdonald polynomials
March 2nd	Jim Pitman UC Berkeley	Exponential formulas in probability and combinatorics
March 9th	Helen Jenne University of Oregon	Combinatorics of the double-dimer model
March 16th	Melissa Sherman-Bennett UC Berkeley and Harvard	Kazhdan-Lusztig immanants and k-positive matrices Zoom recording Notes written by Melissa
March 23rd	Spring break
March 30th	Donghyun Kim UC Berkeley and Harvard	A combinatorial formula for the coefficients of the Al-Salam-Chihara polynomials Zoom recording
April 6th	Brendan Pawlowski USC	The fraction of an S_n-orbit on a hyperplane
April 13th	Isabelle Shankar UC Berkeley	An SOS counterexample to an inequality of symmetric functions Zoom recording P ass-word: T2%**7s6
April 20th	Robert Scherer UC Davis	A criterion for asymptotic sharpness in the enumeration of simply generated trees Zoom recording Pass!word: 6c^j0.t=
April 20th-30th	A COW 2020, a virtual workshop	Website
April 27th	Jesus de Loera UC Davis	Combinatorics on the space of monotone paths of a polytope Zoom recording Pass!word: 4H*+23^9
May 4th (postponed)	Lisa Sauermann (talk in the Fall) Stanford
Fall 2020	Andres Vindas Melendez, University of Kentucky Rachel Lawrence, UC Berkeley Foster Tom, UC Berkeley Eugene Gorsky, UC Davis Melissa Sherman-Bennett, UC Berkeley and Harvard Christian Gaetz, MIT

DATE	SPEAKER	TITLE (click for an abstract)
September 9th	Anastasia Chavez UC Davis	Characterizing quotients of positroids
September 16th	Christopher Eur UC Berkeley	Logarithmic concavity for morphisms of matroids
September 23rd	David Keating UC Berkeley	Arctic Curves for Lecture Hall Tableaux
September 30th	Mark Haiman UC Berkeley	(q,t,u)-Catalan combinatorics and the Schiffmann algebra
October 7th	Alex Heaton Max Planck Institute	Graded multiplicity in harmonic polynomials
October 14th	Einar Steingrimsson University of Strathclyde (UK)	Permutation tableaux and two models in statistical mechanics
October 19th	Bay Area Discrete Math Day California State University, Stanislaus.
October 21st	Bob Lutz MSRI	Matroids arising from electrical networks
October 28th (Power outage, postponed to Spring 2020)	Melissa Sherman-Bennett UC Berkeley and Harvard	Kazhdan-Lusztig immanants and k-positive matrices
November 4th	Jehanne Dousse CNRS (France)	Partition identities and representation theory
November 11th	Holiday
November 18th	Christos Athanasiadis University of Athens (Greece)	Some instances of equivariant gamma-positivity in geometric combinatorics
November 25th	Robert Krone UC Davis	The tropical Cayley-Menger variety
December 2nd	Isaac Konan Universite de Paris	A round trip from crystal bases to integer partitions
December 9th	Dan Romik UC Davis	Finishing times in random sorting networks and staircase shape Young tableaux

Seminar in 2018-2019 (coorganized by S. Corteel and K. Serhiyenko)

DATE	SPEAKER	TITLE (click for an abstract)
May 6	Christopher Miller UC Berkeley	LLT Polynomials, k-Schur Functions, and Positivity
April 29th	Jose Simental Rodriguez UC Davis	Representations of Hecke algebras and lattice-path counting.
April 22nd	Katharina Jochemko KTH and Simons Institute	Real-rooted h*-polynomials
April 15th	Max Hlavacek UC Berkeley	Dehn-Sommerville Equations for Eulerian Cubical Complexes
April 8th	Anne Schilling UC Davis	An insertion algorithm on multiset partitions
April 1st	Ana Garcia Elsener University of Graz	Cluster algebras and factorization
March 18	Raman Sanyal Goethe Universitat-Frankfurt and Simons Institute	Cone valuations, Gram's relation, and combinatorics
March 11	Mario Sanchez UC Berkeley	Mobius Inversion as Duality for Hopf Monoids
March 4	Nicolai ReshetikhinUC Berkeley	On statistics of irreducible components
February 25	Wencin Poh UC Davis	Characterization of queer supercrystals
February 11	Brett Kolesnik UC Berkeley	Two probabilistic proofs of Moon's Theorem and the Bradley-Terry model
February 4	Bernd Sturmfels UC Berkeley and Max Planck Institute	Varieties of signature tensors
January 28	Sam Payne MSRI and University of Texas at Austin	Triangulations with vanishing local h-polynomials
November 26	Trevor Hyde Michigan	Cyclotomic factors of necklace polynomials
November 19	Bob Lutz Michigan The seminar will be at MSRI in the Edward D. Baker Board Room at 12:10pm	Electrical networks and hyperplane arrangements
November 5	Curtis Greene MSRI and Haverford College	Inequalities for families of symmetric functions
October 29	Sami Assaf USC	Nonsymmetric Macdonald polynomials and Demazure characters
October 22	Mariel Supina UC Berkeley	The Hopf monoid of orbit polytopes and its character group
October 15	Michael Singer MSRI	Walks, Groups and Difference Equations
October 8	Dan Romik UC Davis	The Taylor coefficients of the Jacobi theta constant \theta_3
October 1	Thomas McConville MSRI	Coherence of cellular strings of zonotopes
September 24	Foster Tom UC Berkeley	Near-Equality of Ribbon Schur Functions
September 17	Christopher Eur UC Berkeley	Divisors on matroids and their volumes
September 10	Volkmar Welker MSRI	The determinant of the Varchenko Matrix for oriented matroids.

Older seminar webpages: Spring 2018 Fall 2017 Spring 2017 Fall 2016