From: Ferruccio Guidi <fguidi@maelstrom.helm.cs.unibo.it>
Date: Wed, 15 Jan 2020 19:22:26 +0000 (+0100)
Subject: update in basic_2
X-Git-Tag: make_still_working~202
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=57ae1762497a5f3ea75740e2908e04adb8642cc2;hp=57ae1762497a5f3ea75740e2908e04adb8642cc2;p=helm.git

update in basic_2

+ notation update for cnx and related notions
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