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math.LO2016
Amenability, definable groups, and automorphism groups
Krzysztof Krupinski, Anand Pillay
We prove several theorems relating amenability of groups in various categories (discrete, definable, topological, automorphism group) to model-theoretic invariants (quotients by co…
math.LO2016
Definable topological dynamics
Krzysztof Krupinski
For a group definable in a first order structure we develop basic topological dynamics in the category of definable -flows. In particular, we give a description of the u…