Fully simple semihypergroups, transitive digraphs, and sequence A000712. (Q404172)
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scientific article; zbMATH DE number 6339505
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Fully simple semihypergroups, transitive digraphs, and sequence A000712. |
scientific article; zbMATH DE number 6339505 |
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Fully simple semihypergroups, transitive digraphs, and sequence A000712. (English)
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4 September 2014
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The authors continue the study of fully simple semihypergroups. They determine a transversal of isomorphism classes of fully simple semihypergroups with a right absorbing element. The structure of that transversal can be described by means of certain transitive, acyclic digraph. Also, they derive a formula to calculate the number of isomorphism classes of fully simple semihypergroups of size \(m\geq 3\).
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fully simple semihypergroups
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digraphs
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integer sequences
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numbers of semihypergroups
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0.8721157
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0.8627529
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0.8612063
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0.8603113
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0.8563191
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0.8515201
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