University of Cambridge > Talks.cam > Junior Algebra/Logic/Number Theory seminar > Thompson-style groups coming from C* algebras of graphs of groups

Thompson-style groups coming from C* algebras of graphs of groups

Add to your list(s) Download to your calendar using vCal

  • UserRichard Freeland, University of Cambridge
  • ClockFriday 07 October 2016, 15:00-16:00
  • HouseCMS, MR15.

If you have a question about this talk, please contact Nicolas Dupré.

Thompson’s group V is a well-studied group of actions on the ends of the infinite binary tree. Nekrashevych showed how it arose as a group of particular unitary elements of a C star algebra, which he constructs for any group acting (sufficiently nicely) on the tree. I will describe this construction, and then explain attempts to generalize it to graphs of groups, using a C star algebra defined by Nathan Brownlowe, Anne Thomas and others. This will give a new generalization of Thompson’s group, and I will sketch some of its properties. No knowledge of C star algebras or functional analysis is required.

This talk is part of the Junior Algebra/Logic/Number Theory seminar series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2019 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity