A note on operators of deletion and contraction for antichains

Andrey O. Matveev

International Journal of Mathematics and Mathematical Sciences, 2002, vol. 31, 1-5

Abstract:

The operators of deletion and contraction for clutters are generalized to those for antichains of finite bounded posets. A generalization of the result by Seymour (1976), 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.

Date: 2002
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:603792

DOI: 10.1155/S0161171202108088

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