Strong Typed Boehm Theorem and Functional Completeness on the Linear Lambda Calculus

نویسنده

  • Satoshi Matsuoka
چکیده

In this paper, we prove a version of the typed Böhm theorem on the linear lambda calculus, which says, for any given types A and B, when s1 and s2 (respectively, u1 and u2) are different closed terms of A (resp. B), there is a term t such that t s1 =βηc u1 and t s2 =βηc u2 . Several years ago, a weaker version of this theorem was proved, but the stronger version was open. As a corollary of this theorem, we prove that if A has two different closed terms s1 and s2, then A is functionally complete with regard to s1 and s2. So far, it was only known that a few types are functionally complete.

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تاریخ انتشار 2015