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- W2170258711 abstract "Let E be a set with n elements, and let �(n,k) be the set of all labelled topologies on E, having k open sets, and T (n,k) = |�(n,k)|. In this paper, we use a direct approach to compute T (n,k) for all n ≥ 4 and k ≥ 6 � 2 n−4 ." @default.
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- W2170258711 date "2007-01-01" @default.
- W2170258711 modified "2023-09-27" @default.
- W2170258711 title "Direct and Elementary Approach to Enumerate Topologies on a Finite Set" @default.
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