*Date* |
*Speaker* | *Seminar* | *Title* |

Friday, September 16, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Cynthia Vinzant**
*U. Michigan* | Combinatorics | The central curve of a linear program |

Friday, September 23, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**David Speyer**
*U. Michigan* | Combinatorics | Wiring diagrams and alternating strand diagrams |

Friday, September 30, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Max Glick**
*U. Michigan* | Combinatorics | On singularity confinement for the pentagram map |

Friday, October 07, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Leonid Petrov**
*Northeastern U.* | Combinatorics | sl(2) operators and Markov dynamics on branching graphs |

Friday, October 14, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Seungjin Lee**
*U. Michigan* | Combinatorics | Centrally symmetric polytopes with many faces |

Friday, October 21, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Lionel Levine**
*Cornell U.* | Combinatorics | Abelian networks |

Friday, October 28, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Shmuel Friedland**
*UIC* | Combinatorics | On the eigenvalues of graphs: results and conjectures |

Friday, November 04, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Daniele Rosso**
*U. Chicago* | Combinatorics | Classic and mirabolic RSK correspondence for partial flags |

Friday, November 11, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Thomas Lam**
*U. Michigan* | Combinatorics | The shape of a random affine Weyl group element, and random core partitions |

Friday, November 18, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Askold Khovanskii**
*U. Toronto* | Combinatorics | Algebraic and convex geometries |

Friday, December 02, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Cristian Lenart**
*SUNY Albany* | Combinatorics | The combinatorics of affine crystals and the energy function |

Friday, December 09, 2011 Start: 4:10 PM
Location: 3866 East Hall * |
**Sean Keel**
*U. Texas * | Combinatorics | Mirror symmetry and cluster varieties |

Friday, January 27, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Nathan Reading**
*NCSU* | Combinatorics | Universal geometric cluster algebras |

Friday, February 03, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Suho Oh**
*University of Michigan* | Combinatorics | Triangulations of product of simplices |

Friday, February 10, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**John Stembridge**
*University of Michigan* | Combinatorics | W-Cells from Scratch |

Friday, February 17, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Ivan Corwin**
*Microsoft and MIT* | Combinatorics | Tropical combinatorics and Whittaker functions |

Friday, February 24, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Jinho Baik**
*University of Michigan* | Combinatorics | Maximal crossing and nesting of random matchings |

Friday, March 09, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Svante Linusson**
*KTH* | Combinatorics | TASEP on a circle with many types of particles |

Friday, March 16, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Reiho Sakamoto**
*Tokyo University of Science* | Combinatorics | A survey on box-ball systems |

Friday, March 23, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Alexander Ellis**
*Columbia University* | Combinatorics | Odd symmetric functions |

Friday, March 30, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Patricia Hersh**
*NCSU* | Combinatorics | Symmetric chain decomposition for cyclic quotients of Boolean algebras and relation to cyclic crystals |

Friday, April 06, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**David Perkinson**
*Reed College* | Combinatorics | The algebraic geometry of sandpiles |

Friday, April 13, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Karola Meszaros**
*University of Michigan* | Combinatorics | Flow polytopes and the Kostant partition function |

Friday, September 14, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Cynthia Vinzant**
*U. Michigan* | Combinatorics | Hyperbolic Polynomials, Interlacers, and Sums of Squares |

Friday, September 21, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Jonah Blasiak**
*UM* | Combinatorics | Kronecker coefficients for one hook shape |

Friday, September 28, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Frank Sottile**
*Texas A&M* | Combinatorics | An inequality of Kostka numbers and Galois groups of Schubert problems of lines |

Friday, October 05, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Jed Yang**
*UCLA* | Combinatorics | Tiling simply connected regions with rectangles |

Friday, October 12, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Ricky Liu**
*UM* | Combinatorics | Subalgebras of the Fomin-Kirillov algebra |

Friday, October 19, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**David Speyer**
*U. Michigan* | Combinatorics | Real Schubert problems, stable curves and tableaux combinatorics |

Friday, October 26, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Zach Hamaker**
*Dartmouth College* | Combinatorics | Relating Edelman-Greene insertion and the Little map |

Friday, November 02, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Anders Buch**
*Rutgers U* | Combinatorics | CANCELLED |

Friday, November 09, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Dustin Ross**
*Colorado State U.* | Combinatorics | The Loop Murnaghan-Nakayama Rule |

Friday, November 16, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Anders Buch**
*Rutgers U.* | Combinatorics | The puzzle conjecture for 2-step flag manifolds |

Friday, November 30, 2012 Start: 4:10 PM
Location: 3866 East Hall * |
**Harm Derksen**
*U. Michigan* | Combinatorics | The Graph Isomorphism Problem |

Friday, January 18, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Tomoo Matsumura**
*KAIST* | Combinatorics | (Factorial) Schur functions and weighted Grassmannians |

Friday, February 01, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Andreas Blass**
*University of Michigan* | Combinatorics | Shelah's bipartite matching algorithm |

Friday, February 08, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Michael Shapiro**
*Michigan State University* | Combinatorics | Growth rate classification for cluster algebras |

Friday, February 22, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Li Li**
*Oakland University* | Combinatorics | Positivity and tameness in rank 2 cluster algebras |

Friday, March 01, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Alexander Barvinok**
*University of Michigan* | Combinatorics | Thrifty approximations of convex bodies by polytopes |

Friday, March 15, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Bruce Sagan**
*Michigan State University* | Combinatorics | Factoring the characteristic polynomial of a poset |

Friday, March 22, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Michael Chmutov**
*University of Michigan* | Combinatorics | Type A molecules are of Kazhdan-Lusztig type |

Friday, March 29, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Kevin Carde**
*University of Michigan* | Combinatorics | Cluster structures on mixed invariant rings, and related combinatorics |

Friday, September 13, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Pablo Soberon**
*U. Michigan* | Combinatorics | Tverberg's theorem: different approaches to the colorful version |

Friday, September 27, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Nicolas Ford**
*U. Michigan* | Combinatorics | The Expected Codimension of a Matroid Variety |

Friday, October 04, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Sergey Fomin**
*U. Michigan* | Combinatorics | Subtraction-free complexity |

Friday, October 11, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Suho Oh**
*U. Michigan* | Combinatorics | Linear extensions of posets to polytopes |

Friday, October 25, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Shifra Reif**
*U. Michigan* | Combinatorics | Arc diagrams and characters of Lie superalgebras |

Friday, November 01, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Patricia Hersh**
*NCSU* | Combinatorics | Regular cell complexes in total positivity |

Friday, November 08, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Ricky Liu**
*U. Michigan* | Combinatorics | Subalgebras of the Fomin-Kirillov algebra: an update |

Friday, November 15, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Jeanne Scott**
* Institute of Mathematical Sciences, Chennai* | Combinatorics | Twist and Matchings |

Friday, November 22, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Adam Sheffer**
*Tel Aviv* | Combinatorics | Recent progress in distinct distances problems |

Friday, December 06, 2013 Start: 4:10 PM
Location: 3866 East Hall * |
**Andrew Snowden**
*U. Michigan* | Combinatorics | Stable representation theory |

Friday, January 17, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**John Wiltshire-Gordon**
*U. Michigan* | Combinatorics | Building vector spaces from sets |

Friday, January 24, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Amy Pang**
*Stanford U.* | Combinatorics | Card Shuffling and other Hopf-Power Markov Chains |

Friday, January 31, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Erik Carlsson**
*Stony Brook* | Combinatorics | q,t Catalan numbers and Hall-Littlewood polynomials |

Friday, February 07, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Alexander Barvinok**
*UM* | Combinatorics | On testing Hamiltonicity of graphs |

Friday, February 14, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Greg Muller**
*U. Michigan* | Combinatorics | Quiver mutation and Postnikov diagrams |

Friday, February 21, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Josh Alman**
*MIT* | Combinatorics | Positivity Phenomena in Circular Planar Electrical Networks |

Friday, March 14, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Yi Su**
*U. Michigan* | Combinatorics | Electrical Networks and Electrical Lie algebras of classical Lie type |

Friday, March 21, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Carolina Benedetti**
*Michigan State U.* | Combinatorics | From weak to strong combinatorial Hopf algebras |

Friday, March 28, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Ilia Itenberg**
*Inst. Math. Jussieu* | Combinatorics | Hurwitz numbers for real polynomials |

Friday, April 04, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Steven Sam**
*UC Berkeley* | Combinatorics | Grobner bases for twisted commutative algebras |

Friday, April 11, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**David Speyer**
*U. Michigan* | Combinatorics | The twist for positroids |

Friday, April 18, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Vadim Gorin**
*MIT* | Combinatorics | From representations of classical Lie groups to free probability |

Friday, September 05, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Isabella Novik**
*University of Washington* | Combinatorics | The balanced Lower Bound Theorem and Generalized Lower Bound Conjecture |

Friday, September 12, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Bernd Sturmfels**
*UC Berkeley* | Combinatorics | Curves in the Tropical Plane |

Friday, September 19, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Anne Schilling**
*UC Davis* | Combinatorics | Crystal approach to affine Schubert calculus |

Friday, September 26, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Brendon Rhoades**
*UCSD* | Combinatorics | Parking Spaces |

Friday, October 03, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Syu Kato**
*Kyoto University* | Combinatorics | An algebraic study of extension algebras and its applications |

Friday, October 17, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Allen Knutson**
*Cornell U.* | Combinatorics | Schubert calculus and shifting of interval positroid varieties |

Friday, October 24, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Ian Le**
*U. Chicago* | Combinatorics | Horocycles in Affine Buildings and Tropicalization |

Friday, November 07, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Brendan Pawlowski**
*U. Minnesota* | Combinatorics | Cohomology classes of rank varieties and a counterexample to a conjecture of Liu |

Friday, November 14, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Thomas Lam**
*U. Michigan* | Combinatorics | Geometric crystals and Whittaker functions |

Friday, November 21, 2014 Start: 4:10 PM
Location: 3866 East Hall * |
**Paul Federbush**
*University of Michigan* | Combinatorics | New Results and New Conjectures on the Monomer-Dimer Problem |

Friday, January 16, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**John Stembridge**
*U. Michigan* | Combinatorics | Generalized stability of Kronecker coefficients |

Friday, January 23, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Andrew Snowden**
*U. Michigan* | Combinatorics | Two finiteness results in combinatorial commutative algebra |

Friday, January 30, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Pablo Soberon**
*U. Michigan* | Combinatorics | Fixed directions in mass partitions problems |

Friday, February 06, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Alexander Barvinok**
*U. Michigan* | Combinatorics | Complex geometry and computational complexity of the permanent |

Friday, February 20, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Nick Early**
*Pennsylvania State* | Combinatorics | Symmetry and Geometric Structure for the Worpitzky identity |

Friday, February 27, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Alexander Vainshtein**
*U. Haifa* | Combinatorics | Integrable cluster dynamics of directed networks and pentagram maps |

Friday, March 13, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Leonid Petrov**
*U. Virginia* | Combinatorics | On a rational deformation of Hall-Littlewood symmetric polynomials |

Friday, March 20, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Rebecca Patrias**
*U. Minnesota* | Combinatorics | Dual filtered graphs |

Friday, March 27, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Dylan Allegretti**
*Yale U.* | Combinatorics | The symplectic double and F-polynomials |

Friday, April 03, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Melody Chan**
*Harvard U.* | Combinatorics | Staircase paths, Young tableaux, and Brill-Noether curves |

Friday, April 10, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Dominic Searles**
*U. Illinois* | Combinatorics | Root-system combinatorics and Schubert calculus |

Friday, April 17, 2015 Start: 4:10 PM
Location: 3866 East Hall * |
**Maria Monks Gillespie**
*U. California at Berkeley* | Combinatorics | Combinatorics of the q,t-symmetry relation in Macdonald polynomials |

Friday, September 11, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Alexander Garver**
*U. Minnesota* | Combinatorics | Lattice properties of oriented exchange graphs |

Friday, September 18, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Jose Samper**
*U. Washington* | Combinatorics | Relaxations of the matroid axioms |

Friday, September 25, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Hugh Thomas**
*University of Quebec at Montreal* | Combinatorics | Weak order on finite Coxeter groups and representation theory of preprojective algebras |

Friday, October 02, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Rachel Karpman**
*U. Michigan* | Combinatorics | Total positivity for the Lagrangian Grassmannian |

Friday, October 09, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Michelle Wachs**
*U. Miami* | Combinatorics | Chromatic quasisymmetric functions |

Friday, October 16, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Masaki Watanabe**
*U. Tokyo* | Combinatorics | Schubert polynomials and Kraskiewicz-Pragacz modules |

Friday, October 23, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Peter Tingley**
*Loyola U. Chicago* | Combinatorics | Crystal combinatorics from PBW bases |

Friday, October 30, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Thomas McConville**
*U. Minnesota* | Combinatorics | Noncrossing tree partitions |

Friday, November 06, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Shira Zerbib**
*U. Michigan* | Combinatorics | Fractional covers and matchings in families of weighted d-intervals |

Friday, November 13, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Noah Snyder**
*Indiana U. * | Combinatorics | Skein theoretic invariants of planar trivalent graphs |

Friday, November 20, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Chris Fraser**
*U. Michigan* | Combinatorics | Quasiautomorphisms of Grassmannian cluster algebras and webs |

Friday, December 04, 2015 Start: 3:10 PM
Location: 4088 East Hall * |
**Zachary Hamaker**
*U. Minnesota* | Combinatorics | Involution words - a survey |

Friday, January 08, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Oliver Pechenik**
*U. Illinois (Urbana-Champaign)* | Combinatorics | Puzzles and equivariant K-theory of Grassmannians |

Friday, January 22, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Jenna Rajchgot**
*U Michigan* | Combinatorics | Three combinatorial formulas for type A quiver polynomials and K-polynomials |

Friday, January 29, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Jake Levinson**
*UM* | Combinatorics | K-Theory and Monodromy of Schubert Curves |

Friday, February 05, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Gregg Musiker**
*U Minnesota* | Combinatorics | Generalized Snake Graphs for Generalized Cluster Algebras |

Friday, February 12, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Michael Chmutov**
*U Minnesota* | Combinatorics | Matrix Ball Construction for affine Robinson-Schensted Correspondence |

Friday, February 19, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Steven Karp**
*UC Berkeley* | Combinatorics | Sign variation, the Grassmannian, and total positivity |

Friday, February 26, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Visu Makam**
*U. Michigan* | Combinatorics | Polynomial degree bounds for matrix semi-invariants |

Friday, March 11, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Andrew Berget**
*West Washington University* | Combinatorics | A representation of B_n that restricts to the regular representation of B_{n-1}. |

Friday, March 18, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Mihai Ciucu**
*U. Indiana* | Combinatorics | Lozenge tilings with gaps in a 90 degree wedge domain with mixed boundary conditions |

Friday, March 25, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Emily Barnard**
*NCSU* | Combinatorics | Coxeter-biCatalan Combinatorics |

Friday, April 01, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**David Speyer**
*U Michigan* | Combinatorics | Kasteleyn's method and positroids |

Friday, April 08, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Vivek Shende**
*UC Berkeley* | Combinatorics | Cluster varieties from Legendrian knots |

Friday, September 16, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Sam Payne**
*Yale U. * | Combinatorics | Moduli spaces of tropical curves and representations of the symmetric group |

Friday, September 30, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Brendan Pawlowski**
*U. Michigan* | Combinatorics | A representation-theoretic interpretation of positroid classes |

Friday, October 07, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Dylan Thurston**
*Indiana U. * | Combinatorics | Positivity and canonical bases for surface skein algebras |

Friday, October 14, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**SeungJin Lee**
*KIAS* | Combinatorics | Combinatorial description of the cohomology of the affine flag variety |

Friday, October 21, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Alexander Barvinok**
*U. Michigan* | Combinatorics | Complex zeros and computational complexity of partition functions |

Friday, October 28, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Ian Le**
*Perimeter Institute* | Combinatorics | Cluster Structures on Higher Teichmuller Spaces for Classical Groups |

Friday, November 04, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Elizabeth Milicevic**
*Haverford College* | Combinatorics | Maximal Newton polygons and the quantum Bruhat graph |

Friday, November 11, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Max Glick**
*U. Connecticut* | Combinatorics | Discrete solitons in infinite reduced words |

Friday, November 18, 2016 Start: 3:10 PM
Location: 4088 East Hall * |
**Qiao Zhou**
*UC Berkeley* | Combinatorics | Convex polytopes for the central degeneration of the affine Grassmannian |

Friday, January 20, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Balazs Elek**
*Cornell* | Combinatorics | Pizzas and Kazhdan-Lusztig atlases on toric surfaces |

Friday, January 27, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Gabriel Frieden**
*U. Michigan* | Combinatorics | A rational lift of the combinatorial R-matrix |

Friday, February 03, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**David Speyer**
*U. Michigan* | Combinatorics | Large colored sum free sets in finite vector spaces |

Friday, February 10, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Bo Lin**
*UC Berkeley* | Combinatorics | Computing Linear Systems on Metric Graphs |

Friday, February 17, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Brendan Pawlowski**
*University of Michigan* | Combinatorics | Transition formulas and Schur-P-positivity for (stable) involution Schubert polynomials |

Friday, March 10, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Allen Knutson**
*Cornell* | Combinatorics | Schubert puzzles and quantum integrable systems |

Friday, March 17, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Federico Ardila**
*San Francisco State U.* | Combinatorics | The algebraic and combinatorial structure of generalized permutahedra |

Friday, March 24, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Rachel Karpman**
*Ohio State University* | Combinatorics | Triangulations, plabic graphs, and Soliton solutions to the KP equation |

Friday, March 31, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Sergei Lando**
*HSE Moscow & OSU* | Combinatorics | Delta-matroids and Vassiliev invariants |

Friday, April 07, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Stefan Froehlich**
*U. Michigan* | Combinatorics | Honeycombs and Kronecker products |

Friday, April 14, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Vladimir Retakh**
*Rutgers U. * | Combinatorics | Noncommutative Catalan numbers |

Friday, April 21, 2017 Start: 3:10 PM
Location: 4088 East Hall * |
**Chris Fraser**
*IUPUI* | Combinatorics | Braid group symmetries of Grassmannian cluster algebras |

Friday, September 08, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Brendon Rhoades**
*UC San Diego* | Combinatorics | Ordered set partitions, generalized coinvariant algebras, and the Delta Conjecture |

Friday, September 15, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Pavel Galashin**
*MIT* | Combinatorics | Zamolodchikov periodicity and integrability |

Friday, September 22, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Oliver Pechenik**
*U. Michigan* | Combinatorics | Decompositions of Grothendieck polynomials |

Friday, September 29, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Alexey Bufetov**
*MIT* | Combinatorics | Hall-Littlewood RSK algorithm |

Friday, October 06, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Christin Bibby**
*U. Michigan* | Combinatorics | A generalization of Dowling lattices |

Friday, October 20, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Anna Weigandt**
*U. Illinois, Urbana-Champaign* | Combinatorics | Prism Tableaux and Alternating Sign Matrices |

Friday, October 27, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Steven Karp**
*U. Michigan* | Combinatorics | Topology of totally positive spaces |

Friday, November 03, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Nathan Reading**
*North Carolina State U.* | Combinatorics | Dominance phenomena: mutation, scattering and cluster algebras |

Friday, November 10, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Benjamin Wyser**
*Oklahoma State U.* | Combinatorics | Singularities of K-orbit closures and interval pattern avoidance |

Friday, November 17, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Hugh Thomas**
*UQAM* | Combinatorics | Robinson-Schensted-Knuth via quiver representations |

Friday, December 01, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Jeffrey Kuan**
*Columbia* | Combinatorics | Algebraic constructions of Markov duality functions |

Friday, December 08, 2017 Start: 4:10 PM
Location: 4088 East Hall * |
**Tair Akhmejanov**
*Cornell* | Combinatorics | Affine Growth Diagrams |

Friday, January 12, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Hailun Zheng**
*U. Michigan* | Combinatorics | A lower bound theorem for centrally symmetric simplicial polytopes |

Friday, January 19, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Joshua Swanson**
*U. Washington* | Combinatorics | Major Index Asymptotics |

Friday, January 26, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Hanbaek Lyu**
*Ohio State U.* | Combinatorics | Double jump phase transition in a random soliton cellular automaton |

Friday, February 02, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Nate Harman**
*U. Chicago* | Combinatorics | Quantum integer valued polynomials and stable representation theory |

Friday, February 09, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Eric Ramos**
*U. Michigan* | Combinatorics | Families of nested graphs with compatible symmetric-group actions |

Friday, February 16, 2018 canceled Start: 4:10 PM
Location: 4088 East Hall * |
**Evita Nestoridi**
*Princeton U.* | Combinatorics | Cutoff for random to random card shuffle (cancelled) |

Friday, March 09, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Zachary Hamaker**
*U. Michigan* | Combinatorics | K-triangulations, subwords and plane partitions |

Friday, March 16, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Max Glick**
*Ohio State U.* | Combinatorics | Gale-Robinson quivers, representations, and combinatorial formulas |

Friday, March 23, 2018 Start: 4:00 PM
Location: 4088 East Hall * |
**Anna Weigandt**
*UIUC* | Combinatorics | Partition Identities and Quiver Representations |

Friday, March 30, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Bruce Sagan**
*Michigan State University* | Combinatorics | Descent polynomials |

Friday, April 06, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Neriman Tokcan**
*University of Michigan* | Combinatorics | Newton Polytopes in Algebraic Combinatorics |

Friday, April 13, 2018 Start: 4:10 PM
Location: 4088 East Hall * |
**Robert Walker**
*University of Michigan* | Combinatorics | Hearing the Limiting Shape of a Hypersurface Configuration |

Friday, September 14, 2018 Start: 3:00 PM
Location: 2866 East Hall * |
**Dylan Rupel**
*Michigan State University* | Combinatorics | The Combinatorics of Compatible Pairs |

Friday, September 21, 2018 Start: 3:00 PM
Location: 2866 East Hall * |
**Anna Weigandt**
*University of Michigan* | Combinatorics | Bumpless Pipe Dreams and Alternating Sign Matrices |