18/01/2001: Adolfo Piperno (Univ. Roma La Sapienza)
An algebraic view of the Boehm-out technique.

Résumé
Using an algebraic representation of closed beta-normal forms in lambda-calculus, we rephrase Boehm's theorem as an equality predicate between elements of a term algebra. This algebraic interpretation gives new insight into the Boehm-out technique and allows for original applications of the method.