From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/10344 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Uwe Egbert Wolter Newsgroups: gmane.science.mathematics.categories Subject: The language of diagrams Date: Fri, 11 Dec 2020 09:07:52 +0100 Message-ID: Reply-To: Uwe Egbert Wolter Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="16811"; mail-complaints-to="usenet@ciao.gmane.io" To: categories list Original-X-From: majordomo@rr.mta.ca Sat Dec 12 03:21:36 2020 Return-path: Envelope-to: gsmc-categories@m.gmane-mx.org Original-Received: from smtp2.mta.ca ([198.164.44.74]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1knuXP-0004HO-Rv for gsmc-categories@m.gmane-mx.org; Sat, 12 Dec 2020 03:21:36 +0100 Original-Received: from rr.mta.ca ([198.164.44.159]:45862) by smtp2.mta.ca with esmtp (Exim 4.80) (envelope-from ) id 1knuRL-0007u5-2z; Fri, 11 Dec 2020 22:15:19 -0400 Original-Received: from majordomo by rr.mta.ca with local (Exim 4.92.1) (envelope-from ) id 1knuV8-0000hp-Kf for categories-list@rr.mta.ca; Fri, 11 Dec 2020 22:19:14 -0400 Precedence: bulk Xref: news.gmane.io gmane.science.mathematics.categories:10344 Archived-At: Dear all, only some weeks ago I became aware of "the language of diagrams" introduced in "Categories, allegories" by Freyd/Scedrov. Two questions: 1. Is this the first place where this language has been described and defined? 2. Has this language been further elaborated and/or applied at other places? Best regards Uwe [For admin and other information see: http://www.mta.ca/~cat-dist/ ]