Unsound Inferences Make Proofs Shorter
classification
🧮 math.LO
cs.LO
keywords
inferencesproofsshorterunsoundcalculicalculusderivationsexamples
read the original abstract
We give examples of calculi that extend Gentzen's sequent calculus LK by unsound quantifier inferences in such a way that (i) derivations lead only to true sequents, and (ii) proofs therein are non-elementarily shorter than LK-proofs.
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