Introduces a hypersequent-based proof-theoretic framework for basic modal logics K and extensions, explains emergence of standard sequent calculi, and proves cut-elimination syntactically except for KB, KDB, KTB.
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A Proof-Theoretic Study of Modal Logic
Introduces a hypersequent-based proof-theoretic framework for basic modal logics K and extensions, explains emergence of standard sequent calculi, and proves cut-elimination syntactically except for KB, KDB, KTB.