Non determinism through type isomorphism
Alejandro D\'iaz-Caro, Gilles Dowek

TL;DR
This paper introduces an equivalence relation on propositions and a proof system where equivalent propositions share proofs, connecting to known non-deterministic and algebraic lambda-calculi.
Contribution
It defines a novel equivalence relation and proof system that unify various non-deterministic lambda-calculi through type isomorphism.
Findings
Establishes an equivalence relation on propositions.
Develops a proof system where equivalent propositions have identical proofs.
Shows resemblance to known non-deterministic lambda-calculi.
Abstract
We define an equivalence relation on propositions and a proof system where equivalent propositions have the same proofs. The system obtained this way resembles several known non-deterministic and algebraic lambda-calculi.
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