Parametricity and dependent types
Paper i proceeding, 2010

Reynolds' abstraction theorem shows how a typing judgement in System F can be translated into a relational statement (in second order predicate logic) about inhabitants of the type. We expose a similar result, where terms, types, and their relations are expressed in a single typed lambda calculus (a pure type system). Working within a single system dispenses the need for an interpretation layer, allowing for an unusually simple presentation. While the unification puts some constraints on the type system (which we spell out), the result applies to many interesting cases, including dependently-typed ones.

Dependent types

Pure type systems



Jean-Philippe Bernardy

Chalmers, Data- och informationsteknik, Programvaruteknik (Chalmers)

Patrik Jansson

Chalmers, Data- och informationsteknik, Programvaruteknik (Chalmers)

Ross Paterson

International Conference on Functional Programming, September 27-29, 2010, Baltimore, Maryland


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