The number of orders with thirteen elements |
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| Authors: | Claude Chaunier Nik Lygerōs |
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| Affiliation: | (1) Departement de Mathématiques, Université de Lyon-1, 43, boulevard du 11-Novembre-1918, 69622 Villeurbanne Cedex, France;(2) Singularité, 141 avenue de Saxe, 69003 Lyon, France |
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| Abstract: | The number of non-isomorphic posets on 13 elements is P13=33,823,827,452. This extends our previous result P12 which constituted the greatest known value. A table enumerates the posets according to their number of relations.
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| Keywords: | Primary 06-04 secondary 06A07 05C30 |
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