University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > On the Measure Equivalence of Baumslag-Solitar Groups and T(r,s) Tree Automorphism Groups

  Browse A-Z

Log in

University Account External (via Google)

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹī¸ Information

On the Measure Equivalence of Baumslag-Solitar Groups and T(r,s) Tree Automorphism Groups

Download to your calendar using vCal

If you have a question about this talk, please contact nobody.

NPCW06 - Non-positive curvature and applications

In 2001, K. Whyte demonstrated that all Baumslag-Solitar groups BS(r,s), with |r|,|s|≠1 and |r|≠|s|, are quasi-isometric, thus completing the quasi-isometric classification of Baumslag-Solitar groups initiated by B. Farb and L. Mosher. Since then, the question of their measure equivalence has remained an open and intriguing problem. With A. Poulin, A. Tserunyan, R. Tucker-Drob, and K. Wrobel, we have solved this problem, thus establishing the counterpart of Whyte’s theorem in terms of measured equivalence. To do this we are led to a detour through the world of non-unimodular groups and actions which preserve only a class of measure (type III ) and we reduce the question to a problem of the theory of measured graphs in this framework.

This talk is part of the Isaac Newton Institute Seminar Series series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Hybrid: Seminar room, SPRI & Teams - email organiser for details Mary Allen Building, Homerton College, Hills Road, room 106 Ryle Large Meeting Room, Kavli Building

Other talks

A scientists guide to the art of radiation therapy and Neurosurgery for the oncologist Title TBC Packing the Border: Quail Crates and the Regulation of Animal Movement on the US-Mexico Border, 1910s-1940s Polar Oceans Seminar Talk Coexisting with carnivores? The lynx and wolf reintroduction debate Title to be confirmed: ANUBIS
 

Š 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity