It is our pleasure to announce the biweekly cycle of seminars
"Geometry & Topology seminars at Unimib"
about topics arising in low-dimensional topology, CR-geometry and geometric quantization.
The first speaker is Yohann Bouilly, (University of Strasbourg).
The speaker will deliver the talk online via Webex platform (see below for more information) and the meeting will be streamed also in room 3014, at the building U5-Ratio, Università degli Studi di Milano Bicocca.
Date and time: 1st of March 2023, 2 pm (CET)
Title: Torelli subgroup action on character varieties
Abstract: The character varieties of a surface encode geometric structures as Teichmüller space or holomorphic vector bundles. The mapping class group of the surface acts on the character varieties and preserves a measure. This action is known to be properly discontinuous on the Teichmüller space but its behavior is different for character varieties in a compact group (the action is known to be ergodic) and some ergodicity conjecture and results exist for exotic components.
In this talk we will explain why the Torelli subgroup, which is the kernel of the action of the mapping class group on the first homology space, acts ergodically on character varieties in a compact Lie group and what happens for exotic components for SL2-character varieties.
Information to attend in room 3014
The seminar will take place in room 3014, at the building U5-Ratio, Università degli Studi di Milano Bicocca.
Information to attend online
Webinar password: 2iqWqNNnm42 (24797666 from phones)
Argomento