Difference between revisions of "Subbasis"

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(New page: A '''subbasis''' ''S'' for a topology on ''X'' is a collection of subsets of X whose union is ''X''. category:topology)
(No difference)

Revision as of 05:25, April 12, 2007

A subbasis S for a topology on X is a collection of subsets of X whose union is X.