Geodesic
Counting unlabelled topologies and transitive relations
Journal of integer sequences, Tome 8 (2005) no. 2.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: We enumerate isomorphism classes of several types of transitive relations (equivalently, finite topologies) up to 15 or 16 points.
Classification : 06A99, 05C20, 05C30
Keywords: transitive relation, finite topology, order, directed graph 
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     author = {Brinkmann, Gunnar and McKay, Brendan D.},
     title = {Counting unlabelled topologies and transitive relations},
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     number = {2},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2005__8_2_a6/}
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Brinkmann, Gunnar; McKay, Brendan D. Counting unlabelled topologies and transitive relations. Journal of integer sequences, Tome 8 (2005) no. 2. http://geodesic.mathdoc.fr/item/JIS_2005__8_2_a6/