Encoding Labelled Non-Classical Logics in Isabelle
We have used the generic theorem prover Isabelle  to implement the non-classical logis we presented. The logical basis of Isabelle is a natural deduction presentation of minimal implicational predicate logic with universal quantification over all higher-types .1 We call this metalogic Meta, and to prevent object/meta confusion we use Λ to represent Meta’s universal quantifier and ⇒ for implication.
KeywordsNormal Form Logical Operator Universal Quantification Concrete Syntax Proof State
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