Abstract
We give a linear nested sequent calculus for the basic normal tense logic \(\mathsf {Kt}\). We show that the calculus enables backwards proof-search, counter-model construction and syntactic cut-elimination. Linear nested sequents thus provide the minimal amount of nesting necessary to provide an adequate proof-theory for modal logics containing converse. As a bonus, this yields a cut-free calculus for symmetric modal logic \(\mathsf {KB}\).
Supported by WWTF project MA16-28.
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Goré, R., Lellmann, B. (2019). Syntactic Cut-Elimination and Backward Proof-Search for Tense Logic via Linear Nested Sequents. In: Cerrito, S., Popescu, A. (eds) Automated Reasoning with Analytic Tableaux and Related Methods. TABLEAUX 2019. Lecture Notes in Computer Science(), vol 11714. Springer, Cham. https://doi.org/10.1007/978-3-030-29026-9_11
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