From: Ferruccio Guidi <ferruccio.guidi@unibo.it>
Date: Mon, 4 Jan 2021 20:33:13 +0000 (+0100)
Subject: arithmetics for λδ
X-Git-Tag: make_still_working~165
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=68e028d053806177e218ee1a5f8778d3011bef83;hp=68e028d053806177e218ee1a5f8778d3011bef83;p=helm.git

arithmetics for λδ

+ maximum for non-negative integers
+ minor corrections
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