Z. I. Borevich, V. Venslav, É. Dobrovol'skii, V. I. Rodionov, “The number of labeled topologies on nine points”, Zap. Nauchn. Sem. LOMI, 1978, Volume 75,Pages <nobr>35

This article is cited in 3 papers

The number of labeled topologies on nine points

Z. I. Borevich, V. Venslav, É. Dobrovol'skii, V. I. Rodionov

Abstract: The number of all topologies which can be introduced on a fixed set of nine points is found. It is equal to 63 260 289 423. Of them 44 511 042 511 are topologies with the axiom of separability $\mathrm T_\mathrm o$. Bibl. 3 titles.

UDC: 513.83