On the Induced Matching Problem

@inproceedings{Kanj2008OnTI,
  title={On the Induced Matching Problem},
  author={Iyad A. Kanj and Michael J. Pelsmajer and Ge Xia and Marcus Schaefer},
  booktitle={STACS},
  year={2008}
}
We study extremal questions on induced matchings in several natural graph classes. We argue that these questions should be asked for twinless graphs, that is graphs not containing two vertices with the same neighborhood. We show that planar twinless graphs always contain an induced matching of size at least n/40 while there are planar twinless graphs that do not contain an induced matching of size (n + 10)/27. We derive similar results for outerplanar graphs and graphs of bounded genus. These… CONTINUE READING
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