The permutative lambda calculus
The permutative lambda calculus
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置换 lambda 演算
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发表时间:
2012
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通讯作者:
D. Kesner
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作者:
Beniamino Accattoli;D. Kesner
We introduce the permutative lambda-calculus, an extension of lambda-calculus with three equations and one reduction rule for permuting constructors, generalising many calculi in the literature, in particular Regnier's sigma-equivalence and Moggi's assoc-equivalence. We prove confluence modulo the equations and preservation of beta-strong normalisation (PSN) by means of an auxiliary substitution calculus. The proof of confluence relies on M-developments, a new notion of development for lambda-terms.