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The Number of Finite Topologies

D. Kleitman and B. Rothschild
Proceedings of the American Mathematical Society
Vol. 25, No. 2 (Jun., 1970), pp. 276-282
DOI: 10.2307/2037205
Stable URL: http://www.jstor.org/stable/2037205
Page Count: 7
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The Number of Finite Topologies
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Abstract

The logarithm (base 2) of the number of distinct topologies on a set of n elements is shown to be asymptotic to n2/4 as n goes to infinity.

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