Combinatorics Seminar 2017


Speaker: Peter Cameron, University of St Andrews

Date: Thu, Nov 16, 2017

Time: 16:10 - 17:10

Venue: Middle Meeting Room

Title: Permutation groups and transformation semigroups (II)

Abstract:

A permutation group is called synchronizing if the semigroup generated by the group together with any non-permutation of the domain contains an element of rank 1 (that is, whose image consists of a single point). This concept arose in automata theory. The definition can be translated to one involving graph endomorphisms. I will outline what is known about synchronizing groups.

Slides: View slides


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