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most citedDeciding contractibility of a non-simple curve on the boundary of a 3-manifold: A computational Loop Theorem

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math.CO2011

Helly numbers of acyclic families

Éric Colin de Verdière, Grégory Ginot, Xavier Goaoc

The Helly number of a family of sets with empty intersection is the size of its largest inclusion-wise minimal sub-family with empty intersection. Let F be a finite family of open…