From: Andrea Asperti <andrea.asperti@unibo.it>
Date: Mon, 8 Nov 2004 12:27:44 +0000 (+0000)
Subject: First draft (introduction).
X-Git-Tag: v_0_6_4_1~21
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;ds=sidebyside;h=b50dc843a35a9831d3d9ac4829fee0738db2d52b;hp=b50dc843a35a9831d3d9ac4829fee0738db2d52b;p=helm.git

First draft (introduction).
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