Sun, 02 Sep 2007 23:36:21 +0200 fix sgn_div_norm class
huffman [Sun, 02 Sep 2007 23:36:21 +0200] rev 24520
fix sgn_div_norm class
Sun, 02 Sep 2007 12:34:20 +0200 made theorem-references safe
urbanc [Sun, 02 Sep 2007 12:34:20 +0200] rev 24519
made theorem-references safe
Sat, 01 Sep 2007 18:17:44 +0200 removed unused join_mode;
wenzelm [Sat, 01 Sep 2007 18:17:44 +0200] rev 24518
removed unused join_mode; standard_typ_check: proper prepare_patternT, which rejects schematic type vars in non-patterns;
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