quotient map

Fetched 2026-10-26 (cache).

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Noun

1. {{lb|en|topology}} A [[surjective]], [[continuous]] function from one [[topological space]] to another one, such that the latter one's topology has the property that if the [[inverse image]] (under the said function) of some subset of it is open in the function's domain, then the subset is open in the target space.

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