Abstract
The computational complexity of eliminating pure literals is calibrated for various classes of CNF formulas. The problem is shown to be P-complete in general, NL-complete for 2-CNF, and SL-complete for CNF formulas with at most two occurrences of each variable.
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Johannsen, J. The Complexity of Pure Literal Elimination. J Autom Reasoning 35, 89–95 (2005). https://doi.org/10.1007/s10817-005-9008-8
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DOI: https://doi.org/10.1007/s10817-005-9008-8