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

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 Froelich**
*U. of Michigan* | Combinatorics | TBA |

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 |