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bn:00128914n
Noun Concept
Categories: Mathematical problems, Topology stubs, Topology
EN
Kuratowski's closure-complement problem  Kuratowski's 14 set theorem  Kuratowski 14 set theorem  Kuratowski closure-complement problem  Kuratowski closure-complement theorem
EN
In point-set topology, Kuratowski's closure-complement problem asks for the largest number of distinct sets obtainable by repeatedly applying the set operations of closure and complement to a given starting subset of a topological space. Wikipedia
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EN
In point-set topology, Kuratowski's closure-complement problem asks for the largest number of distinct sets obtainable by repeatedly applying the set operations of closure and complement to a given starting subset of a topological space. Wikipedia
Theorem that the monoid generated by taking closures and complements of a given set in a topological space has size at most 14, attained by e.g. the set (0, 1) ∪ (1, 2) ∪ {3} ∪ ([4, 5] ∩ ℚ) of reals Wikidata
IS A
theorem
mathematical problem
PART OF
topology
NAMED AFTER
Kazimierz Kuratowski
Wikipedia
EN
Kuratowski's closure-complement problem
Wikidata
EN
Kuratowski's closure-complement problem
Wikipedia Redirections
EN
Kuratowski's 14 set theorem, Kuratowski 14 set theorem, Kuratowski closure-complement problem, Kuratowski closure-complement theorem

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