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A '''subbasis''' ''S'' for a topology on ''X'' is a collection of subsets of X whose union is ''X''.
A '''subbasis''' ''S'' for a topology on ''X'' is a collection of subsets of X whose union is ''X''. The '''topology generated by the subbasis ''S''''' is defined to be the collection ''T'' of all unions of finite intersections of elements in ''S''.
[[category:topology]]
[[category:topology]]