Sat, 13 Apr 2019 19:58:28 +0200 wenzelm more ctyp operations;
Sat, 13 Apr 2019 19:27:12 +0200 wenzelm tuned;
Sat, 13 Apr 2019 18:50:48 +0200 wenzelm clarified: use existing Thm.dest_ctyp_fun (which is more strict);
Sat, 13 Apr 2019 16:56:12 +0200 wenzelm prefer exception TYPE, e.g. when used within conversion;
Sat, 13 Apr 2019 16:42:19 +0200 wenzelm tuned signature -- more ctyp operations;
Sat, 13 Apr 2019 16:33:33 +0200 wenzelm clarified group of "main" library sessions;
Sat, 13 Apr 2019 16:26:19 +0200 wenzelm tuned signature -- more ctyp operations;
Sat, 13 Apr 2019 15:14:15 +0200 wenzelm merged
Sat, 13 Apr 2019 15:13:43 +0200 wenzelm tuned signature: more operations;
Sat, 13 Apr 2019 08:43:33 +0000 haftmann backed out a93e6472ac9c, which does not bring anything substantial: division_ring is not commutative in multiplication but semidom_divide is
Sat, 13 Apr 2019 08:11:48 +0000 haftmann tuned
Sat, 13 Apr 2019 08:11:47 +0000 haftmann more document structure
Sat, 13 Apr 2019 08:11:46 +0000 haftmann tuned
Sat, 13 Apr 2019 13:30:02 +0200 wenzelm more abbrevs;
Sat, 13 Apr 2019 12:45:38 +0200 wenzelm obsolete;
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