Largest chordal and interval subgraphs faster than 2n
Peer reviewed, Journal article
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We prove that in a graph with n vertices, induced chordal and interval subgraphs with the maximum number of vertices can be found in time O(2λn) for some λ< 1. These are the first algorithms breaking the trivial 2nnO(1) bound of the brute-force search for these problems.