From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/5115 Path: news.gmane.org!not-for-mail From: Andree Ehresmann Newsgroups: gmane.science.mathematics.categories Subject: Re: [ALGTOP-L] history of ``twisted cohomology" and nonabelian cohomology Date: Sat, 22 Aug 2009 19:43:04 +0200 Message-ID: Reply-To: Andree Ehresmann NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain;charset=UTF-8; DelSp="Yes"; format="flowed" Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1251561937 3886 80.91.229.12 (29 Aug 2009 16:05:37 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 29 Aug 2009 16:05:37 +0000 (UTC) To: Ronnie Brown , categories@mta.ca Original-X-From: categories@mta.ca Sat Aug 29 18:05:30 2009 Return-path: Envelope-to: gsmc-categories@m.gmane.org Original-Received: from mailserv.mta.ca ([138.73.1.1]) by lo.gmane.org with esmtp (Exim 4.50) id 1MhQQj-00082y-OD for gsmc-categories@m.gmane.org; Sat, 29 Aug 2009 18:05:29 +0200 Original-Received: from Majordom by mailserv.mta.ca with local (Exim 4.61) (envelope-from ) id 1MhPrS-00054s-7E for categories-list@mta.ca; Sat, 29 Aug 2009 12:29:02 -0300 Content-Disposition: inline Original-Sender: categories@mta.ca Precedence: bulk Xref: news.gmane.org gmane.science.mathematics.categories:5115 Archived-At: Dear Ronnie, I have read with much interest your mail on your experience with =20 nonabelian cohomology. In the sixties with Charles we also had much =20 thought about that subject, and we came to the idea that the whole =20 frame should be generalized. However Charles has only published one =20 paper on the subject, and I think nobody has ever cited it. It is the =20 paper: "Cohomologie =C3=A0 valeurs dans une cat=C3=A9gorie domin=C3=A9e" (Collodque= =20 Topologie Bruxelles 1964), CBRM 1966, reprinted in "Oeuvres" Vol. =20 III-2, 531-580). It could interest you as a curiosity. Hoping everything is fine with you, Warmest regards Andree [For admin and other information see: http://www.mta.ca/~cat-dist/ ]