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Can every invariant measure on a definable group in a NIP theory be decomposed canonically into idempotent measures in a way that is functorial with respect to definable homomorphisms?

Related: Idempotent Measure Conjecture in NIP theories, Ellis Semigroup Theorem, Furstenberg Structure Theorem for distal systems

The problem asks whether the decomposition of invariant measures on definable groups in NIP theories into idempotent components can be made canonical and natural. More precisely, when a definable group G in a NIP structure carries an invariant Keisler measure, one wants to know if there is a systematic, choice-free way to break that measure into idempotent pieces that respects the algebraic structure and behaves predictably under maps between groups. The idempotent measure conjecture proposes that every invariant measure is a combination of idempotent ones, but the question of whether such a decomposition can be made functorial remains unresolved.

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