Sat, 15 Sep 2012 16:09:53 +0200 traytel export rel_mono theorem
Fri, 14 Sep 2012 22:23:11 +0200 blanchet merged two unfold steps
Fri, 14 Sep 2012 22:23:11 +0200 blanchet took out one rotate_tac
Fri, 14 Sep 2012 22:23:11 +0200 blanchet killed spurious rotate_tac; use auto instead of blast
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