From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.science.mathematics.categories/10730 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: JS PL Newsgroups: gmane.science.mathematics.categories Subject: Re: Pieter Hofstra Date: Wed, 4 May 2022 05:48:34 +0900 Message-ID: Reply-To: JS PL Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28440"; mail-complaints-to="usenet@ciao.gmane.io" Cc: "categories@mta.ca" To: Philip Scott Original-X-From: majordomo@rr.mta.ca Wed May 04 16:31:52 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 1nmG2h-0007F3-8w for gsmc-categories@m.gmane-mx.org; Wed, 04 May 2022 16:31:51 +0200 Original-Received: from rr.mta.ca ([198.164.44.159]:58944) by smtp2.mta.ca with esmtp (Exim 4.80) (envelope-from ) id 1nmG0Z-0006Ds-EE; Wed, 04 May 2022 11:29:39 -0300 Original-Received: from majordomo by rr.mta.ca with local (Exim 4.92.1) (envelope-from ) id 1nmG0F-0006Wt-Fm for categories-list@rr.mta.ca; Wed, 04 May 2022 11:29:19 -0300 Precedence: bulk Xref: news.gmane.io gmane.science.mathematics.categories:10730 Archived-At: I am very sad about Pieter's passing. I did my undergrad at the University of Ottawa, where Pieter was one of my teachers and mentors. I did my first research project with Pieter and Pieter was the one who taught me category theory. Over the years, I got to hangout with Pieter at numerous conferences and seminars. I got to work with Pieter and also become friends with him. I always enjoyed having a chat with Pieter and going for food and drinks. Pieter will be greatly missed. My condolences to his family and friends. JS PL On Wed, 4 May 2022 at 04:46, Philip Scott wrote: > It is with great sadness that we announce that our dear friend and > colleague Pieter Hofstra (1975-2022) passed away unexpectedly on May 1. > Pieter obtained his PhD from Utrecht University, under Jaap van Oosten, > studying realizability toposes. His research interests included general > topos theory, realizability, inverse semigroups and groupoids, abstract > computability, and homotopy type theory. Among his recent works, with J. > Funk he introduced the notion of isotropy groups of toposes, which he was > actively developing with students and colleagues. > > While Pieter was a brilliant researcher, a kind teacher and a caring > supervisor, we will most remember him as a friend. When we have any > details for a memorial service, we will pass them along. > > Richard Blute, Simon Henry, Philip Scott (University of Ottawa) > [For admin and other information see: http://www.mta.ca/~cat-dist/ ]