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Quote: a class of subsets is a topology if it is closed under arbitrary unions and finite intersections

topics > all references > references sa-sz > QuoteRef: simmGF_1963 , p. 92



Topic:
topology

Quotation Skeleton

Let X be a non-empty set. A class … two conditions: (1) the union of every class … of sets in T is a set in … under the formation of arbitrary unions and finite …   Google-1   Google-2

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Topic: topology (29 items)

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