A note on operators of deletion and contraction for antichains (Q1848013)
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scientific article; zbMATH DE number 1821315
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A note on operators of deletion and contraction for antichains |
scientific article; zbMATH DE number 1821315 |
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A note on operators of deletion and contraction for antichains (English)
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29 October 2002
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Summary: The operators of deletion and contraction for clutters are generalized to those for antichains of finite bounded posets. A generalization of the result of \textit{P. D. Seymour} [J. Lond. Math. Soc., II. Ser. 12, No. 3, 356-360 (1976; Zbl 0351.05023)] describing the relationship between the operators of deletion, contraction, and the blocker map is considered as a comparison in the lattice of antichains of a poset.
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deletion
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contraction
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antichains
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finite bounded posets
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