A new convolution operation on invariant Keisler measures over arbitrary theories, transferred from Ellis semigroups of automorphism flows, classifies idempotents by relatively type-definable subgroups of Aut(C).
Generically stable and smooth measures in NIP theories
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Convolution semigroups for automorphism dynamics
A new convolution operation on invariant Keisler measures over arbitrary theories, transferred from Ellis semigroups of automorphism flows, classifies idempotents by relatively type-definable subgroups of Aut(C).