Call-by-Need, Neededness and All That

January 31, 2018 · The Ethereal · 🏛 Foundations of Software Science and Computation Structure

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Authors Delia Kesner, Alejandro Ríos, Andrés Viso arXiv ID 1801.10519 Category cs.LO: Logic in CS Cross-listed cs.PL Citations 13 Venue Foundations of Software Science and Computation Structure Last Checked 6 months ago
Abstract
We show that call-by-need is observationally equivalent to weak-head needed reduction. The proof of this result uses a semantical argument based on a (non-idempotent) intersection type system called $\mathcal{V}$. Interestingly, system $\mathcal{V}$ also allows to syntactically identify all the weak-head needed redexes of a term.
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