On a topological invariant of finite topological spaces and enumerations

DOI10.21099/TKBJM/1496161830zbMath0760.54002OpenAlexW569310925MaRDI QIDQ1202791

Shōji Ochiai

Publication date: 22 February 1993

Published in: Tsukuba Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.21099/tkbjm/1496161830

zbMATH Keywords

enumeration of posetenumeration of topologyidempotent Boolean matrix

Mathematics Subject Classification ID

Exact enumeration problems, generating functions (05A15) Combinatorial aspects of matrices (incidence, Hadamard, etc.) (05B20) Structure and representation theory of distributive lattices (06D05) Several topologies on one set (change of topology, comparison of topologies, lattices of topologies) (54A10) Cardinality properties (cardinal functions and inequalities, discrete subsets) (54A25)

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