Theme: Hyperbolicity of the curve complex

We will work up towards a proof of delta-hyperbolicity of the curve complex of a surface given by Hensel, Przytycki, and Webb here.

Date | Speaker | Topic(s) | Reference |
---|---|---|---|

Sep 10 | Asaf | Introduction and overview | - |

Sep 24 | Clement | Delta-hyperbolic spaces; quasi-isometries; quasi-geodesics | - |

Oct 1 | Dan | Curve and arc graphs and mapping class groups | - |

Oct 8 | Dan | Contractability of the arc complex | Hatcher (not the book) |

Oct 15 | Andrew | Unicorn paths and hyperbolicity of the curve complex (part 1) | Hensel-Przytycki-Webb |

Oct 22 | Andrew | Unicorn paths and hyperbolicity of the curve complex (part 2) | Hensel-Przytycki-Webb |

Oct 29 | No Seminar | Colloquium by Marissa Loving at 4pm | |

Nov 5 | Asaf | The automorphism group of the curve complex Part I | Ivanov |

Nov 12 | Asaf | The automorphism group of the curve complex Part II | |

Dec 10 | Sam | Coarse fundamental groups |