Fri, 29 Oct 1999 12:49:50 +0200 wenzelm \isasymbol renamed to \isasym;
Fri, 29 Oct 1999 12:48:50 +0200 wenzelm tuned;
Fri, 29 Oct 1999 12:48:27 +0200 wenzelm tuned msg;
Fri, 29 Oct 1999 12:45:14 +0200 wenzelm \isasym;
Fri, 29 Oct 1999 10:10:31 +0200 oheimb improved singleton_insert_inj_eq
Thu, 28 Oct 1999 19:57:34 +0200 wenzelm improved presentation;
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