From: Ferruccio Guidi <ferruccio.guidi@unibo.it>
Date: Wed, 17 Feb 2021 16:40:28 +0000 (+0100)
Subject: propagating the arithmetics library, partial commit
X-Git-Tag: make_still_working~161
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=6604a232815858a6c75dd25ac45abd68438077ff;hp=6604a232815858a6c75dd25ac45abd68438077ff;p=helm.git

propagating the arithmetics library, partial commit

+ lib ported
+ minor corrections and renaming
+ old parked version of ynat removed
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