Standard Lemma guide
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noun
The set of all subsets of a topological space such that, for some element in that space every neighbourhood of that element contains a member of the subset.
Definition source: English Wiktionary via Wiktextract
Topics: mathematics, sciences, topology
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
No etymology was provided for this word.
