Comments:

Nice paper! - Publicly available implementation: https://gitlab.inria.fr/bora-ucar/karp--sipser-reduction - I like Theorem 3.1 a lot! I'm thinking how to generalize it, adapt it, use it for other problems. - Would have liked to see experiments on larger graphs. - Is there any other Rules that could be considered in addition to Rules 1 and 2?

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