Base-two permutation groups and applications
- đ¤ Speaker: Tim Burness (University of Bristol)
- đ Date & Time: Friday 29 July 2022, 11:40 - 12:30
- đ Venue: Seminar Room 1, Newton Institute
Abstract
Let G be a primitive permutation group on a finite set X and recall that a subset of X is a base for G if its pointwise stabiliser is trivial. The base size of G, denoted b(G), is defined to be the minimal size of a base. This natural invariant has been intensively studied for many years, finding a wide range of applications. In this talk I will report on recent progress concerning a project initiated by Jan Saxl in the 1990s, which seeks to determine all the primitive groups with b(G) = 2. I will also outline some of the main applications and I will highlight one or two related problems.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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Tim Burness (University of Bristol)
Friday 29 July 2022, 11:40-12:30