[TYPES/announce] New definitions of contexts and free variables for lambda-calculi with explicit substitutions

[George Cherevichenko]

http://arxiv.org/abs/1303.5039

Abstract.
Contexts (environments) are not sets or lists without multiplicity, but
have a more complicated structure. There is a natural order on the set of
contexts. A "set" of free variables is not a set, but a context in the new
sense. New definitions simplify working with explicit substitutions.

It is desirable to see this article (Lang and Lescanne) before

http://lara.inist.fr/handle/2332/734
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.seas.upenn.edu/pipermail/types-announce/attachments/20130327/2ee73694/attachment.html>