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Type checking dependent (record) types and subtyping

    • Published online: 01 March 2000

In this work we put forward an algorithm for the mechanical verification of an extension of Martin-Löf's theory of types with dependent record types and subtyping. We first give a concise description of that theory and motivate its use for the formalization of algebraic constructions. Then we concentrate on the informal explanation and specification of a proof checker that we have implemented. The logical heart of this proof checker is a type checking algorithm for the forms of judgement of a particular formulation of the extended theory which incorporates a notion of parameter. The algorithm has been proven sound with respect to the latter calculus. We include a discussion on that proof in the present work.

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Journal of Functional Programming
  • ISSN: 0956-7968
  • EISSN: 1469-7653
  • URL: /core/journals/journal-of-functional-programming
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