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We propose a formal theory of contract-based computing. We model contracts as formulae in an intuitionistic logic extended with a "contractual'' form of implication. Decidability holds for our logic: this allows us to mechanically infer the rights and the duties deriving from any set of contracts. We embed our logic in a core calculus of contracting processes, which combines features from concurrent...
Superdeduction is a formalism closely related to deduction modulo which permits to enrich a deduction system - especially a first-order one such as natural deduction or sequent calculus - with new inference rules automatically computed from the presentation of a theory. We give a natural encoding from every functional pure type system (PTS) into superdeduction by defining an appropriate first-order...
Many semantical aspects of programming languages, such as their operational semantics and their type assignment calculi, are specified by describing appropriate proof systems. Recent research has identified two proof-theoretic features that allow direct, logic-based reasoning about such descriptions: the treatment of atomic judgments as fixed points (recursive definitions) and an encoding of binding...
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