October 11, 2016 |

Ian Frankel |

October 18, 2016 |

Lvzhou Chen: SCL in Free Products |

The problem of computing scl in free product is to find the most efficient surface mapping into a wedge of spaces subject to a restriction on the boundary map. The difficulty is that the space of surface mappings is huge. I will present an idea of Danny Calegari to decompose the surface and use a FINITE dimensional polyhedral cone to encode a small amount of the information to compute scl. Similar ideas appear in geometry/topology quite often. I will explain how to get rationality and spectral gap (if time permits) from this. |

October 25, 2016 |

Nick Salter |

November 1, 2016 |

Chen Lei |

November 8, 2016 |

Nir Gadish |

November 15, 2016 |

Kevin Casto |

November 22, 2016 |

Ben O’Connor |

December 1, 2016 |

Weiyan Chen |

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