Hard Problems That Quickly Become Very Easy

Barnaby Martin; Daniël Paulusma; Siani Smith

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arXiv · 2012.09770

Hard Problems That Quickly Become Very Easy

Barnaby Martin·Daniël Paulusma·Siani Smith

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Abstract

A graph class is hereditary if it is closed under vertex deletion. We give examples of NP-hard, PSPACE-complete and NEXPTIME-complete problems that become constant-time solvable for every hereditary graph class that is not equal to the class of all graphs.

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Barnaby Martin, Daniël Paulusma, Siani Smith. 2020-12-17. Hard Problems That Quickly Become Very Easy. https://arxiv.org/abs/2012.09770

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