What is Janusz A. Brzozowski?
{{Infobox scientist | name = Janusz Brzozowski | image = Portrait of Professor Janusz Brzozowski.jpg | image_size = | alt = Portrait of Professor Janusz Brzozowski taken in the Davis Centre at the University of Waterloo | caption = | birth_date = {{Birth date|1935|05|10}} | birth_place = [[Warsaw]], [[Poland]] | death_date = {{Death date and age|2019|10|24|1935|05|10}} | death_place = [[Waterloo, Ontario]], [[Canada]] | residence = | citizenship = | nationality = | fields = [[Computer science]] | workplaces = | alma_mater = [[Princeton University]] | thesis_title = Regular Expression Techniques for Sequential Circuits | thesis_year = 1962 | doctoral_advisor = [[Edward J. McCluskey]] | academic_advisors = | doctoral_students = | notable_students = | known_for = [[Brzozowski derivative]] | author_abbrev_bot = | author_abbrev_zoo = | influences = | influenced = | awards = | signature = <!--(filename only)--> | signature_alt = | footnotes = | spouse = }} '''Janusz John Antoni Brzozowski''' (May 10, 1935 &ndash; October 24, 2019) was a Polish-Canadian [[computer science|computer scientist]]. He was a Distinguished Professor Emeritus<ref>{{Cite web|url=https://cs.uwaterloo.ca/people-profiles/john-brzozowsk|title=John Brzozowski|last=|first=|date=|website=David R. Cheriton School of Computer Science|archive-url=https://web.archive.org/web/20181222082021/https://cs.uwaterloo.ca/people-profiles/john-brzozowsk|archive-date=December 22, 2018|access-date=December 21, 2018|url-status=dead}}</ref> at the [[University of Waterloo]]'s [[David R. Cheriton School of Computer Science]]. From 1967 to 1996 he was Professor at the [[University of Waterloo]]. He was known for his works to [[mathematical logic]], [[circuit theory]], and [[automata theory]]. Brzozowski died of [[cancer]] at his home in [[Waterloo, Ontario]] on October 24, 2019 at the age of 84.<ref>[https://cs.uwaterloo.ca/news/memoriam-distinguished-professor-emeritus-janusz-john-brzozowski In memoriam: Distinguished Professor Emeritus Janusz (John)