# Quiver Varieties and Higgs Bundles

### Summer 2012

Tuesdays 2-4pm, Room 1018, 215 Huron St.,University of Toronto (Campus Map)

**The seminar has ended. Notes will be posted shortly.**

### Organizers

Jonathan Fisher, Steven Rayan### Lectures

Date |
Speaker |
Topics |

2012-05-15 | Jonathan Fisher | Kahler and hyperkahler quotients, quiver varieties |

2012-05-22 | Jonathan Fisher | Hypertoric varieties, \(\mathbb{C}^\times\)-action and core |

2012-06-05 | Steven Rayan | Twisted Higgs bundles, Hitchin map, \(\mathbb{C}^\times\)-action |

2012-06-12 | Steven Rayan | Morse theory on moduli of twisted Higgs |

2012-06-20 | Jonathan Fisher | Polygon and hyperpolygon spaces, Morse theory |

2012-06-26 | Jonathan Fisher | Betti numbers of hyperpolygon spaces |

2012-07-10 | Jonathan Fisher | The Kirwan map and the Konno method |

2012-07-17 | Steven Rayan | Morse theory on twisted Higgs, quiver bundles |

2012-07-24 | Steven Rayan | Betti numbers for rank 2 and 3 |

2012-07-31 | Jonathan Fisher | Higher rank polygons, equivariant Morse theory |

2012-08-07 | Jonathan Fisher | Betti numbers of critical sets in higher rank |

2012-08-14 | Jonathan Fisher | Betti numbers of critical sets in rank 3 |

2012-08-30 | Jonathan Fisher | Parabolic Higgs and polygons |

2012-09-04 | Jonathan Fisher | Polygons spaces for other flag types, complete integrability |

This seminar is part of the Geometric Structures Laboratory at the Fields Institute.