From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Mon, 22 Dec 2008 22:36:20 +0000 (+0000)
Subject: Just copied here from formal_topologies.ma.
X-Git-Tag: make_still_working~4328
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=6e75e2415b0433a134e0050d63d627a66efea7a4;hp=6e75e2415b0433a134e0050d63d627a66efea7a4;p=helm.git

Just copied here from formal_topologies.ma.
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