Groups of arbitrarily poor permutation stability
- π€ Speaker: Henry Bradford (University of Cambridge)
- π Date & Time: Tuesday 25 November 2025, 09:10 - 10:10
- π Venue: Seminar Room 1, Newton Institute
Abstract
We propose a quantitative notion of permutation stability for finitely generated groups. Within the class of finitely presented groups our notion is related to, but a priori distinct from, the “stability rate” introduced by Becker and Mosheiff. We construct a family of finitely generated stable groups which exhibit, quantitatively, arbitrarily ””bad” permutation stability. This means that any application of a “sample-and-substitute” algorithm to our groups will be very slow.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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Henry Bradford (University of Cambridge)
Tuesday 25 November 2025, 09:10-10:10