Abstract
Term-generic logic (TGL) is a first-order logic parameterized with terms defined axiomatically (rather than constructively), by requiring them to only provide generic notions of free variable and substitution satisfying reasonable properties. TGL has a complete Gentzen system generalizing that of first-order logic. A certain fragment of TGL, called Horn 2, possesses a much simpler Gentzen system, similar to traditional typing derivation systems of λ-calculi. Horn 2 appears to be sufficient for defining a whole plethora of λ-calculi as theories inside the logic. Within intuitionistic TGL, a Horn 2 specification of a calculus is likely to be adequate by default. A bit of extra effort shows adequacy w.r.t. classic TGL as well, endowing the calculus with a complete loose semantics.
Supported in part by NSF grants CCF-0448501, CNS-0509321 and CNS-0720512, by NASA contract NNL08AA23C, by the Microsoft/Intel funded Universal Parallel Computing Research Center at UIUC, and by several Microsoft gifts.
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Popescu, A., Roşu, G. (2009). Term-Generic Logic. In: Corradini, A., Montanari, U. (eds) Recent Trends in Algebraic Development Techniques. WADT 2008. Lecture Notes in Computer Science, vol 5486. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03429-9_19
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