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arXiv · 1006.2867

Internalized realizability in pure type systems

Marc Lasson
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Abstract

Let P be any pure type system, we are going to show how we can extend P into a PTS P' which will be used as a proof system whose formulas express properties about sets of terms of P. We will show that P' is strongly normalizable if and only if P is. Given a term t in P and a formula F in P', P' is expressive enough to construct a formula "t ||- F" that is interpreted as "t is a realizer of F". We then prove the following adequacy theorem: if F is provable then by projecting its proof back to a term t in P we obtain a proof that "t ||- F".

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Marc Lasson. 2011-08-01. Internalized realizability in pure type systems. https://arxiv.org/abs/1006.2867

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