Mon, 18 May 1998 18:10:04 +0200 wenzelm added Source module;
Mon, 18 May 1998 18:08:58 +0200 wenzelm Co-algebraic data sources.
Mon, 18 May 1998 17:57:47 +0200 wenzelm Symbol.stopper;
Mon, 18 May 1998 17:57:16 +0200 wenzelm improved finite scans: more abstract stopper;
Mon, 18 May 1998 17:31:58 +0200 nipkow snoc_induct/exhaust -> rev_induct_exhaust.
Mon, 18 May 1998 17:31:49 +0200 nipkow Cleaned up and simplified etc.
Fri, 15 May 1998 11:35:56 +0200 wenzelm witnesses: lookup stored thms instead of axioms;
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