From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/10794 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Tim Van der Linden Newsgroups: gmane.science.mathematics.categories Subject: Rudger Kieboom Date: Mon, 5 Sep 2022 16:59:33 +0200 Message-ID: Reply-To: Tim Van der Linden Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="39952"; mail-complaints-to="usenet@ciao.gmane.io" To: Original-X-From: majordomo@rr.mta.ca Tue Sep 06 02:44:22 2022 Return-path: Envelope-to: gsmc-categories@m.gmane-mx.org Original-Received: from smtp2.mta.ca ([198.164.44.40]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oVMhS-000ABm-H6 for gsmc-categories@m.gmane-mx.org; Tue, 06 Sep 2022 02:44:22 +0200 Original-Received: from rr.mta.ca ([198.164.44.159]:37806) by smtp2.mta.ca with esmtp (Exim 4.80) (envelope-from ) id 1oVMgb-0006Jr-Rj; Mon, 05 Sep 2022 21:43:29 -0300 Original-Received: from majordomo by rr.mta.ca with local (Exim 4.92.1) (envelope-from ) id 1oVMfg-0005qF-EI for categories-list@rr.mta.ca; Mon, 05 Sep 2022 21:42:32 -0300 Precedence: bulk Xref: news.gmane.io gmane.science.mathematics.categories:10794 Archived-At: I have the sad honour to announce the passing of Rudger Kieboom (1950-2022)= , Professor Emeritus at the Vrije Universiteit Brussel (VUB). His enthusias= m for Category Theory influenced several master students at the VUB. Philip= pe Cara, Tomas Everaert and I made our Ph.D.'s under his guidance. After an initial two years of studies in his home town Antwerp, Rudger obta= ined both his M.Sc. (1970) and Ph.D. (1976) at the VUB, where he would work= for 45 years in total. His main mathematical interest was in classical hom= otopy theory (diverse types of (co)fibrations, homotopy lifting and extensi= on properties), work which gradually became more categorical, with later re= sults in a 2-dimensional and in an internal-categorical context. Rudger was a friendly, good-humoured man, who enjoyed a good discussion ove= r a glass of beer. Apart from science, mathematics, horror movies and philo= sophy, he was passionate about jazz: he would never miss an edition of Antw= erp's yearly jazz festival. Unfortunatly, at the end of his active career, = Rudger was diagnosed with Alzheimer's disease. This caused him to be hospit= alised suddenly, seven years ago. His disease soon made any type of contact= impossible, so in this sense we have already had to miss him for several y= ears. Tim Van der Linden [For admin and other information see: http://www.mta.ca/~cat-dist/ ]