Intermediate logics admitting a structural hypersequent calculus

Open Access
Authors
Publication date 04-2019
Journal Studia Logica
Volume | Issue number 107 | 2
Pages (from-to) 247–282
Organisations
  • Interfacultary Research - Institute for Logic, Language and Computation (ILLC)
Abstract We characterise the intermediate logics which admit a cut-free hypersequent calculus of the form HLJ+R, where HLJ is the hypersequent counterpart of the sequent calculus LJ for propositional intuitionistic logic, and R is a set of so-called structural hypersequent rules, i.e., rules not involving any logical connectives. The characterisation of this class of intermediate logics is presented both in terms of the algebraic and the relational semantics for intermediate logics. We discuss various—positive as well as negative—consequences of this characterisation.
Document type Article
Language English
Published at https://doi.org/10.1007/s11225-018-9791-y
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