University of Cambridge > Talks.cam > Geometric Group Theory (GGT) Seminar > Stable commutator length on RAAGs

Stable commutator length on RAAGs

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

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

The stable commutator length scl(g) of an element g in a group G measures the least complexity of a surface to “fill” g. Stable commutator length on non-abelian free groups is now fairly well understood but some questions remain open: Which rational numbers arise as scls? What is the distribution of scl for random elements? What is the gap for chains of scl? I will give a partial answer to all of these questions for right-angled Artin groups (RAAGs). If time permits, I will also show that computing scl in RAA Gs is (unlike in free groups) NP-hard. This is joint work with Lvzhou Chen.

This talk is part of the Geometric Group Theory (GGT) Seminar series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2024 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity