From phma@webjockey.net Sat Sep 21 17:11:32 2002 Return-Path: X-Sender: lojban-out@lojban.org X-Apparently-To: lojban@yahoogroups.com Received: (EGP: mail-8_1_1_3); 22 Sep 2002 00:11:32 -0000 Received: (qmail 66033 invoked from network); 22 Sep 2002 00:11:32 -0000 Received: from unknown (66.218.66.217) by m8.grp.scd.yahoo.com with QMQP; 22 Sep 2002 00:11:32 -0000 Received: from unknown (HELO digitalkingdom.org) (204.152.186.175) by mta2.grp.scd.yahoo.com with SMTP; 22 Sep 2002 00:11:32 -0000 Received: from lojban-out by digitalkingdom.org with local (Exim 4.05) id 17suNR-0007rf-00 for lojban@yahoogroups.com; Sat, 21 Sep 2002 17:13:33 -0700 Received: from digitalkingdom.org ([204.152.186.175] helo=chain) by digitalkingdom.org with esmtp (Exim 4.05) id 17suMm-0007rG-00; Sat, 21 Sep 2002 17:12:52 -0700 Received: with ECARTIS (v1.0.0; list lojban-list); Sat, 21 Sep 2002 17:12:51 -0700 (PDT) Received: from 208-150-110-21-adsl.precisionet.net ([208.150.110.21] helo=neofelis.ixazon.lan) by digitalkingdom.org with esmtp (Exim 4.05) id 17suMj-0007r3-00 for lojban-list@lojban.org; Sat, 21 Sep 2002 17:12:49 -0700 Received: by neofelis.ixazon.lan (Postfix, from userid 500) id 07D483C477; Sat, 21 Sep 2002 20:10:12 -0400 (EDT) Content-Type: text/plain; charset="iso-8859-1" To: lojban-list@lojban.org Subject: [lojban] Sets and classes Date: Sat, 21 Sep 2002 20:10:10 -0400 X-Mailer: KMail [version 1.2] X-Spamtrap: fesmri@ixazon.dynip.com MIME-Version: 1.0 Message-Id: <02092120101005.02144@neofelis> X-archive-position: 1448 X-ecartis-version: Ecartis v1.0.0 Sender: lojban-list-bounce@lojban.org Errors-to: lojban-list-bounce@lojban.org X-original-sender: phma@webjockey.net Precedence: bulk X-list: lojban-list From: Pierre Abbat Reply-To: phma@webjockey.net X-Yahoo-Group-Post: member; u=92712300 X-Yahoo-Message-Num: 15938 In mathematical usage, "class" is {klesi} (or maybe {zilkle} since x2 is always sets) and "set" appears to be {selcmi}. But what of the empty set? {} selcmi noda, and {selcmi noda} is equivalent to {na selcmi}. So what is the word for "set"? phma