RP^([d]) is an equivalence relation: An enveloping semigroup proof
classification
🧮 math.DS
keywords
relationenvelopingequivalenceproofsemigroupabelianassertsflow
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We present a purely enveloping semigroup proof of a theorem of Shao and Ye which asserts that for an abelian group $T$, a minimal flow $(X,T)$ and any integer $d \ge 1$, the regional proximal relation of order $d$ is an equivalence relation.
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Cited by 1 Pith paper
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Cube structures of the universal minimal system, nilsystems and applications
Develops cube structures on the universal minimal system to study nilsystems, giving alternative proofs for saturation properties and a new algebraic proof that RP^[d] is an equivalence relation even for d=1.
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