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Short proof of two cases of Chvátal´s conjecture

Abstract: In 1974 Chvátal conjectured that no intersecting family in a downset can be larger than the largest star. In the same year Kleitman and Magnanti proved the conjecture when is contained in the union of two stars, and Sterboul when . We give short self-contained proofs of these two statements.

Fuente: Discrete Mathematics, 2019, 342(8), 2192-2194

Publisher: Elsevier

Publication date: 01/08/2019

No. of pages: 3

Publication type: Article

ISSN: 1872-681X,0012-365X

Spanish project: MTM2014-54207-P

Publication Url: https://doi.org/10.1016/j.disc.2019.04.011

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