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Modification Problems toward Proper (Helly) Circular-arc Graphs (2202.00854v1)
Published 2 Feb 2022 in cs.DS
Abstract: We present a $9k\cdot n{O(1)}$-time algorithm for the proper circular-arc vertex deletion problem, resolving an open problem of van 't Hof and Villanger [Algorithmica 2013] and Crespelle et al. [arXiv:2001.06867]. Our structural study also implies parameterized algorithms for modification problems toward proper Helly circular-arc graphs.