Characterization of Zero Entropy of Open Cover
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Theorem
Let $X$ be a topological Space.
Let $\alpha$ be an open cover of $X$.
Let $\map H \alpha$ be the entropy of $\alpha$.
Then $\map H \alpha = 0$ if and only if $X \in \alpha$.
Proof
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Sources
- 2013: Peter Walters: An Introduction to Ergodic Theory (4th ed.): Chapter $7$: Topological Entropy