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Hardness measures and resolution lower bounds

Various "hardness" measures have been studied for resolution, providing theoretical insight into the proof complexity of resolution and its fragments, as well as explanations for the hardness of instances in SAT solving. In this report we aim at a unified view of a number of hardness measures, including different measures of width, space and size of resolution proofs. We also extend these measures to all clause-sets (possibly satisfiable).

preprint2014arXivOpen access
Olaf BeyersdorffOliver Kullmann
Logic in Computer ScienceComputational Complexity
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Olaf BeyersdorffOliver Kullmann

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