In this paper, we study the invariant measures of a continuous map and a continuous semi-flow on a compact metric space.
本文研究了紧致度量空间上连续自映射及连续半流的不变测度。
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In a dusty field in Kitui, eastern Kenya, farmers are being taught how to construct small, semi-circular barriers of earth that control the flow of water, slowing its run-off.