University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Cohomological methods in stability

  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

ℹ️ Information

Cohomological methods in stability

Download to your calendar using vCal

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

OGGW04 - Stability and probabilistic methods

For d≥4 and p a sufficiently large prime, we construct a lattice Γ≤PSp2d(ℚp), such that its universal central extension cannot be sofic if Γ satisfies some weak form of stability in permutations. In the proof, we make use of high-dimensional expansion phenomena. A key ingredient are new cohomological obstructions to weak containment of actions.

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

Centre for Mathematical Sciences, Wolfson Room Room C, West Hub S2, Alison Richard Building

Other talks

Security Cooperation within Government and between Governments Whose Egypt? Community Stewardship and the Politics of Museum Interpretation Machine Politics? Computers and AI in the History of Political Thought Title TBC "That's History. That's Truth. I Seen It Myself": T'tc~tsa (Wailaki) and the Enslavement of California Native Americans. Paediatric Medicine and Rheumatology
 

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