My professor seems to randomly use the symbols [itex]\approx[/itex], [itex]\cong[/itex] and [itex]\simeq[/itex] to denote either homeomorphic, isomorphic or homotopic. So, what is the official symbol for each?(adsbygoogle = window.adsbygoogle || []).push({});

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# Symbols for homeomorphic, isomorphic, homotopic

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