Near group actions

17.05.2022 15:00 - 17:00

Yves de Cornulier (Lyon)

For a group action, every group element acts on a set as a permutation. We consider a similar setting where each group element acts a permutation "modulo indeterminacy on finite subsets". We will indicate various natural occurrences of near actions. We will discuss realizability notions: is a given near action induced by a genuine action?


Join Zoom meeting ID 
613 8691 2732 or via the link below.

Passcode: A group is called an ________ group if it admits an invariant mean. (8 letters, lowercase)


G. Arzhantseva, Ch. Cashen, Y. Lodha


SR 10, 2. OG., OMP 1