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Solving the clique cover problem on (bull, $C_4$)-free graphs

Published 2 Apr 2017 in cs.DM | (1704.00316v1)

Abstract: We give an $O(n4)$ algorithm to find a minimum clique cover of a (bull, $C_4$)-free graph, or equivalently, a minimum colouring of a (bull, $2K_2$)-free graph, where $n$ is the number of vertices of the graphs.

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