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arXiv · 2012.10191

Reconstructing a single-head formula to facilitate logical forgetting

Paolo Liberatore
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Abstract

Logical forgetting may take exponential time in general, but it does not when its input is a single-head propositional definite Horn formula. Single-head means that no variable is the head of multiple clauses. An algorithm to make a formula single-head if possible is shown. It improves over a previous one by being complete: it always finds a single-head formula equivalent to the given one if any.

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Paolo Liberatore. 2020-12-18. Reconstructing a single-head formula to facilitate logical forgetting. https://arxiv.org/abs/2012.10191

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