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The EKR property for flag pure simplicial complexes without boundary

Abstract: We prove that the family of facets of a pure simplicial complex Cof dimension up to three satisfies the Erdos-Ko-Rado property whenever Cis flag and has no boundary ridges. We conjecture the same to be true in arbitrary dimension and give evidence for this conjecture. Our motivation is that complexes with these two properties include flag pseudo-manifolds and cluster complexes.

 Authorship: Olarte J., Santos F., Spreer J., Stump C.,

 Fuente: Journal of Combinatorial Theory. Series A, 2020, 172, 105205

 Publisher: Elsevier

 Year of publication: 2020

 No. of pages: 29

 Publication type: Article

 DOI: 10.1016/j.jcta.2019.105205

 ISSN: 0097-3165,1096-0899

 Spanish project: MTM2014-54207-P

 Publication Url: https://doi.org/10.1016/j.jcta.2019.105205

Authorship

OLARTE, JORGE ALBERTO

SPREER, JONATHAN

STUMP, CHRISTIAN