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Upcoming Events

Mar7

PhD Dissertation Defense - Zifu Wang - Geography and Geoinformation Science

Mar 7, 2025, 1:00 - 3:00 PM

Exploratory Hall, Room 2312

Mar7

Mathematics Colloquium: Mathematical billiards

Mar 7, 2025, 3:30 - 4:30 PM

Mar11

STEM (& Pre-Med/Pre-Health) Virtual Transfer Info Sessions

Mar 11, 2025, 5:00 - 6:00 PM

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Geometry MMA Seminar: Extensions of finitely generated Veech groups

Mar 17, 2025, 10:30 - 11:30 AM

 

Speaker: Eliot Bongiovanni, Rice University

Title:  Extensions of finitely generated Veech groups

 

Abstract:  Given a closed surface S, a subgroup G of the mapping class group of S has an associated extension group Γ, which is the fundamental group of an S-bundle. A general problem is to infer features of Γ from G: I take G to be a finitely generated Veech group and show that Γ is hierarchically hyperbolic. This is a generalization of results from Dowdall, Durham, Leininger, and Sisto regarding lattice Veech groups. After a quick primer on hyperbolic plane geometry, flat surfaces, and Veech groups, the main research content is a “proof by picture” to construct a hyperbolic space Ê on which Γ acts nicely.

 

Time: Monday, March 17, 2025 – 10:30am-11:30am

Place: Exploratory Hall, Room 4208

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