Seminar meets Tuesdays at 4:30 EST via Zoom.  You can subscribe to the GGTT mailing list here.  The Zoom link will be sent via this mailing list.  This semester, the seminar organizers are Kim Ruane and Genevieve Walsh.

Date Name Title
Sept 22 Corey Bregman Minimal volume entropy of free-by-cyclic groups and 2D RAAGs
Abstract:  Minimal volume entropy is a Riemannian manifold invariant introduced by Gromov to study the asymptotic geometry of the universal cover, and is related to the growth of the fundamental group.  Here we study an extension of this invariant to a simplicial complex X equipped with a piecewise Riemannian metric.  When X is 2-dimensional and aspherical, we characterize when the minimal volume entropy vanishes in terms of an algebraic condition on the fundamental group.  We apply these results to the cases of free-by-cyclic groups and 2-dimensional right-angled Artin groups, obtaining a uniform lower bound in the nonvanishing case.  This is joint work with Matt Clay.
Sept 29 Indira Chatterji

Proper actions on Lp spaces

Oct 6 Emily Stark TBA Abstract:
Oct 13 James Farre TBA Abstract: TBA
Oct 20 Michelle Chu TBA
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Oct 27 Stefano Vidussi TBA
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Nov 3 Qing Liu TBA
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Nov 10 TBA TBA
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Nov 17 TBA TBA
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Nov 24 TBA TBA
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Dec 1 TBA TBA
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Dec 8 Kasia Jankiewicz TBA
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