Wed, 16 May 2012 18:16:51 +0200 | blanchet | treat sets specially in relevance filter, as they used to, to avoid cluttering the problem with facts about Set.member and Collect | changeset | files |
Wed, 16 May 2012 18:16:51 +0200 | blanchet | get ready for automatic generation of extensionality helpers | changeset | files |