Date | 2015-01-21 |
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Speaker | Thomas Koberda |

Dept. | Yale University |

Room | 129-301 |

Time | 16:00-17:00 |

In this talk we will discuss a new result joint with J. Mangahas and S. Taylor which characterizes finitely generated subgroups of right-angled Artin groups which have quasi-isometric orbit maps on the extension graph. These are analogous to convex cocompact subgroups of mapping class groups as defined by B Farb and L. Mosher, and which are still rather poorly understood despite having attracted so much attention in recent years.

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