From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15446.32000.710318.879017@nanonic.hilbert.space> From: paurea@gsyc.escet.urjc.es To: 9fans@cse.psu.edu Subject: [OT] Re: [9fans] Getting started in Plan9 - help In-Reply-To: <3C561EC9.88F86501@null.net>:Douglas A. Gwyn's message of 09:31:47 Tuesday,29 January 2002 References: <200201252256.RAA14748@math.psu.edu> <3C5597C4.ED91B0F3@strakt.com> <3C561EC9.88F86501@null.net> Date: Tue, 29 Jan 2002 11:44:16 +0100 Topicbox-Message-UUID: 4826fee2-eaca-11e9-9e20-41e7f4b1d025 Douglas A. Gwyn writes: > There are all sorts of "products" in mathematics, > but the so-called "cross product" is one of the least qualified > to go by that name. I don't think so. It is the dual of the sesquilineal projection of the tensorial product. I couln't resist writing it. :-) The fact that it is anticonmutative doesn't stop it being a product, it distributes with the sum and has an absorbing element (I don't know if it is called so in English) and has all sorts of properties which make it a product. -- Saludos, Gorka "Curiosity sKilled the cat"