It's my understanding that Georg Ferdinand Ludwig Philipp Cantor discovered set theory and it drove him mad and he committed suicide. Any people are actually recommending that we learn this stuff? Dave This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you. -- //www.freelists.org/webpage/oracle-l