From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/3659 Path: news.gmane.org!not-for-mail From: Peter May Newsgroups: gmane.science.mathematics.categories Subject: Details Date: Tue, 6 Mar 2007 17:55:29 -0600 Message-ID: NNTP-Posting-Host: main.gmane.org X-Trace: ger.gmane.org 1241019439 9654 80.91.229.2 (29 Apr 2009 15:37:19 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 29 Apr 2009 15:37:19 +0000 (UTC) To: categories@mta.ca Original-X-From: rrosebru@mta.ca Tue Mar 6 21:39:55 2007 -0400 Return-path: Envelope-to: categories-list@mta.ca Delivery-date: Tue, 06 Mar 2007 21:39:55 -0400 Original-Received: from Majordom by mailserv.mta.ca with local (Exim 4.61) (envelope-from ) id 1HOkyi-0001Td-SM for categories-list@mta.ca; Tue, 06 Mar 2007 21:30:04 -0400 Original-Sender: cat-dist@mta.ca Precedence: bulk X-Keywords: X-UID: 13 Original-Lines: 14 Xref: news.gmane.org gmane.science.mathematics.categories:3659 Archived-At: 1971, not 1982, was when operads were defined. Certainly I did not know multicategories, but they only correspond to non-sigma operads, operads without permutations, and I would not have bothered inventing a word just for them. Precisely, multicategories are the many object version of non-sigma operads. The point is that the applications for which operads were invented depend vitally on the permutations. Peter May