On recurrence in zero-dimsnional locally compact flow with compactly generated phase group

Xiongping Dai

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arXiv · 2207.11852

On recurrence in zero-dimsnional locally compact flow with compactly generated phase group

Xiongping Dai

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Abstract

We define recurrence for a compactly generated para-topological group $G$ acting continuously on a locally compact Hausdorff space $X$ with $\dim X=0$, and then, show that if $\overline{Gx}$ is compact for all $x\in X$, the conditions (i) this dynamics is pointwise recurrent, (ii) $X$ is a union of $G$-minimal sets, (iii) the $G$-orbit closure relation is closed in $X\times X$, and (iv) $X\ni x\mapsto \overline{Gx}\in 2^X$ is continuous, are pairwise equivalent. Consequently, if this dynamics is pointwise product recurrent, then it is pointwise regularly almost periodic and equicontinuous; moreover, a distal, compact, and non-connected $G$-flow has a non-trivial equicontinuous pointwise regularly almost periodic factor.

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Xiongping Dai. 2022-07-25. On recurrence in zero-dimsnional locally compact flow with compactly generated phase group. https://arxiv.org/abs/2207.11852

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