Quasi-polynomial Algorithms for List-coloring of Nearly Intersecting Hypergraphs

04/04/2019

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by   Khaled Elbassioni, et al.

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A hypergraph H on n vertices and m edges is said to be nearly-intersecting if every edge of H intersects all but at most polylogarthmically many (in m and n) other edges. Given lists of colors L(v), for each vertex v∈ V, H is said to be L-(list) colorable, if each vertex can be assigned a color from its list such that no edge in H is monochromatic. We show that list-colorability for any nearly intersecting hypergraph, and lists drawn from a set of constant size, can be checked in quasi-polynomial time in m and n.