381:, the still-unsolved problem of the existence of invariant subspaces for bounded linear operators on Hilbert space. He made substantial contributions to the development of reflexive and reductive operator algebras and to the study of lattices of invariant subspaces, composition operators on the Hardy-Hilbert space and linear operator equations. His publications include many with his long-time collaborator Heydar Radjavi, including the book
423:. Representing himself in court, he was acquitted of obstructing police but convicted of causing a disturbance, but was able to have his conviction overturned on appeal. With his newfound interest in the law, Rosenthal began volunteering as a paralegal representing friends and activists who had been arrested and charged with minor criminal offences at protests or for
594:
Rosenthal married his first wife, Helen Black (1942–2017), in 1960 when he was 19 and she was 18. Both of them were social activists and would become mathematicians at the
University of Toronto. They divorced in 1979, but remained friends. Rosenthal married his second wife, Carol Kitai, a medical
620:: "I regard myself as a Marxist, but not one affiliated with any particular parties... I have a very strong hatred of racism and the grotesque economic inequalities such as exist in the world. It is very deeply embedded in my bones."
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Rosenthal provided legal services for various leftist causes and marginalized clients for free. He was also active in civil law suing police and public officials, and participated in
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544:. The court ruled in Figueroa's favor, striking down a law that prohibited small political parties from obtaining the same tax benefits as large parties.
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331:
1052:"Obituary: Peter Rosenthal, 82, a Toronto professor and lawyer who saw the beauty in both exploring mathematics and representing social-justice activists"
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to represent him before the law society. The law society abandoned its action after Roach moved a motion to move the disciplinary proceeding to court.
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289:, New York with his parents, Harold (1913–1983) and Esther (1914–1985), and two younger brothers, Erik and Walter. Rosenthal described himself as a "
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1002:"Overview of family history (with links to selected documents) 1. HAROLD, IRVING, & SANDY ROSENTHAL AND THEIR PARENTS, ALBERT & NAOMI"
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named
Rosenthal Toronto's "Best activist lawyer". In May 2016, he was awarded a Law Society Medal by the Law Society of Upper Canada.
322:
Rosenthal had poor grades in high school and barely graduated, but after nearly failing in college due to the time he spent attending
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265:(June 1, 1941 – May 25, 2024) was an American-Canadian mathematician, lawyer, and activist who was Professor of Mathematics at the
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Roach encouraged
Rosenthal to go to law school so that he could represent clients in more serious cases, and he was admitted to
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In the 1980s, Rosenthal worked with Roach representing 21 peace activists who had been charged in relation to protests against
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with a B.S. in
Mathematics in 1962. In 1963 he obtained an MA in Mathematics and in 1967 a Ph.D. in Mathematics from the
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1378:
642:, was inspired by Rosenthal. It was written by Arkells' lead singer Max Kerman, a friend of Rosenthal and his family.
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Rosenthal supervised the Ph.D. theses of fifteen students and the research work of a number of post-doctoral fellows.
377:, and most of his subsequent research was in operator theory and related fields. Much of his work was related to the
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293:". His father was a high school math teacher and his mother was a left-wing activist who had been a member of the
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In parallel with his career in mathematics, Rosenthal pursued a career in law. While teaching at the
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where he remained for the rest of his career, eventually becoming a full professor and retiring as a
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Rosenthal represented many activists who faced charges as a result of political protests, including
819:"Helen Stephanie Rosenthal: Mathematician who loved to teach and was active in faculty association"
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341:. Their youngest brother, Walter (Wally) Rosenthal, is a community activist and trade unionist in
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977:"U of T math professor Peter Rosenthal became a lawyer so he could take his activism to court"
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in 1987 at the age of 46. He went on to obtain an LL.B. in 1990 and was called to the
Ontario
447:
478:. While this effort was unsuccessful it helped lead to a later decision by the university to
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Rosenthal himself was also a committed activist and in 1960 participated in protests at the
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into the police shootings of several Black men, representing the families of the deceased.
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His maternal grandmother, Sonia, had immigrated to New York from Russia after the failed
798:"Harold Rosenthal and Esther (Posner) Rosenthal (Age 28 and 27) - 1940 Census - Queens"
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864:"Peter Rosenthal's passions for law and math make for a beautiful, if different, life"
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The song "A Little Rain (A Song for Pete)" (2016), by the alternative rock band the
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Rosenthal died in
Toronto on May 25, 2024, at the age of 82. He had suffered from
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regime. Rosenthal was one of four
University of Toronto professors who sought an
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In 1967, Rosenthal moved to Canada to accept an assistant professorship at the
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http://digitalarchives.queenslibrary.org/browse/wally-rosenthal-full-interview
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459:
353:. Both Erik and Wally were civil rights and anti-war activists in the 1960s.
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He was a major figure in the
Toronto legal community, and was profiled by
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373:. His thesis, "On lattices of invariant subspaces" concerns operators on
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to stop Babb along with a declaration by the court that apartheid was a
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over allegedly saying ""I want the fucking
Indians out of the park."
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219:
162:, Michael Rosenthal, Daniel Kitai Rosenthal, Esther Kitai Rosenthal
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https://www.newhaven.edu/faculty-staff-profiles/erik-rosenthal.php
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Rosenthal, Daniel; Rosenthal, David; Rosenthal, Peter (2014),
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Erik
Rosenthal is an emeritus professor of mathematics at the
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or other activist-related offences, particularly related to
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in 1969, Rosenthal was arrested while giving a speech at an
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Academic staff of the University of Toronto Faculty of Law
1305:"Harris denies ever using profane slur against natives"
695:
An Introduction to Operators on the Hardy-Hilbert Space
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in 1992. Rosenthal joined Roach's firm as a partner.
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sit-ins at Woolworth's in Greensboro, North Carolina
693:Martinez-Avendano, Ruben; Rosenthal, Peter (2006),
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1369:Queens College, City University of New York alumni
439:for practicing law without a license and he hired
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1241:"Peter Rosenthal selected Best Activist Lawyer"
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1208:
1190:. torontolife.com. January 2008. Archived from
450:and their work on manufacturing components for
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385:(Springer-Verlag, 1973; second edition 2003).
330:protests, he began to focus on his studies at
1266:"Law Society Announces 2016 Award Recipients"
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16:Canadian mathematician and lawyer (1941–2024)
8:
1469:Deaths from the COVID-19 pandemic in Canada
1349:Academic staff of the University of Toronto
1344:University of Toronto Faculty of Law alumni
730:A Readable Introduction to Real Mathematics
363:Queens College, City University of New York
1454:Canadian people of American-Jewish descent
675:Radjavi, Heydar; Rosenthal, Peter (2000),
652:Radjavi, Heydar; Rosenthal, Peter (1973),
435:activity. Rosenthal was threatened by the
18:
1449:Canadian people of Russian-Jewish descent
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269:, and an adjunct professor of Law at the
1444:Canadian people of Polish-Jewish descent
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281:Rosenthal grew up in a Jewish family in
1429:American anti–nuclear weapons activists
1409:Canadian anti–nuclear weapons activists
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559:, Vicki Monague of Stop Dump Site 41,
315:'s in Flushing in solidarity with the
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1104:. Mathematical Association of America
631:, and died due to complications from
7:
1364:21st-century Canadian mathematicians
1359:20th-century Canadian mathematicians
717:A Glimpse at Hilbert Space Operators
1419:American anti–Vietnam War activists
1247:. University of Toronto. 2007-03-20
944:. University of Toronto. 2007-03-20
14:
1291:"Articles archived on Medium.com"
1132:The Mathematics Genealogy Project
1050:Ringel, Heather (June 10, 2024).
938:"Makin - Peter Rosenthal Profile"
602:and political activist. He was a
557:Ontario Coalition Against Poverty
225:On Latices of Invariant Subspaces
772:"Peter Rosenthal (death notice)"
573:2010 G20 Toronto summit protests
487:University of Toronto Law School
415:demonstration outside of the US
271:University of Toronto Law School
123:
1424:American civil rights activists
1399:Canadian anti-poverty activists
606:; his mother was active in the
369:; his Ph.D. thesis advisor was
319:protesting racial segregation.
143:
119:
1404:Canadian anti-racism activists
1026:"Wally Rosenthal Oral History"
866:. The Toronto Star. 2014-01-05
677:Simultaneous Triangularization
614:movements. Rosenthal told the
565:Black Action Defence Committee
466:in defence of South African's
1:
1374:Canadian civil rights lawyers
1339:University of Michigan alumni
1217:"On the left side of the law"
1159:"On the left side of the law"
975:Lorinc, John (June 4, 2024).
714:and Donald Sarason) editors.
1459:American emigrants to Canada
1389:People from Queens, New York
351:United States Postal Service
1414:Canadian anti-war activists
1215:Kirk Makin (3 March 2007).
571:and others arrested at the
437:Law Society of Upper Canada
304:and was a supporter of the
1485:
823:University of Toronto News
579:and cross-examined former
379:invariant subspace problem
1289:Rosenthal, Peter (2020).
889:Department of Mathematics
598:Rosenthal was a lifelong
534:Communist Party of Canada
361:Rosenthal graduated from
256:
176:
172:Esther (Posner) Rosenthal
74:Beth Tzedec Memorial Park
1434:Anti-apartheid activists
480:divest from South Africa
349:after retiring from the
1028:. Queens Public Library
919:. University of Toronto
891:. University of Toronto
590:Personal life and death
542:Supreme Court of Canada
339:University of New Haven
302:1905 Russian Revolution
263:Peter Michael Rosenthal
23:Peter Michael Rosenthal
528:Rosenthal represented
476:crime against humanity
367:University of Michigan
199:University of Michigan
464:University of Toronto
409:University of Toronto
390:University of Toronto
334:, excelling in math.
277:Early life and family
267:University of Toronto
251:University of Toronto
208:University of Toronto
109:Helen Stephanie Black
94:Mathematician, lawyer
1311:. February 16, 2006.
1056:Canadian Jewish News
532:, the leader of the
190:Queens College, CUNY
160:Jeffrey S. Rosenthal
122: 1960;
654:Invariant Subspaces
629:Parkinson’s disease
383:Invariant Subspaces
181:Academic background
1464:Lawyers in Ontario
1379:Operator theorists
1221:The Globe and Mail
885:"Rosenthal, Peter"
595:doctor, in 1985.
581:Premier of Ontario
538:Figueroa v. Canada
505:The Globe and Mail
425:civil disobedience
394:professor emeritus
357:Mathematics career
1394:Canadian Marxists
1128:"Peter Rosenthal"
1102:"Peter Rosenthal"
913:"Peter Rosenthal"
739:978-3-319-05654-8
704:978-0-387-35418-7
686:978-0-387-98466-7
448:Litton Industries
260:
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462:to speak at the
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232:Doctoral advisor
170:Harold Rosenthal
158:Alan Rosenthal,
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62:Toronto, Ontario
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1165:. March 3, 2007
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604:red diaper baby
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452:cruise missiles
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295:Communist Party
291:red diaper baby
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778:. May 29, 2024
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1273:. Retrieved
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1249:. Retrieved
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1224:. Retrieved
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1196:. Retrieved
1192:the original
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1135:. Retrieved
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1005:. Retrieved
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780:. Retrieved
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697:, Springer,
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679:, Springer,
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656:, Springer,
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515:Now Magazine
514:
510:Toronto Star
503:
499:Toronto Life
497:
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484:
456:South Africa
445:
429:civil rights
406:
403:Legal career
398:
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360:
347:York College
336:
328:anti-nuclear
324:civil rights
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247:Institutions
227: (1967)
224:
56:(2024-05-25)
54:May 25, 2024
39:June 1, 1941
1384:Algebraists
1334:2024 deaths
1329:1941 births
584:Mike Harris
569:Jaggi Singh
561:Dudley Laws
553:John Clarke
549:Shawn Brant
540:before the
508:, and the
458:ambassador
433:anti-racist
371:Paul Halmos
236:Paul Halmos
136:Carol Kitai
81:Citizenship
1323:Categories
1275:2016-06-09
1251:2014-08-01
1226:2014-08-01
1198:2014-08-01
1137:2014-08-01
1108:2014-08-01
1061:August 24,
1032:August 25,
948:2014-08-01
923:2014-08-01
895:2014-08-01
870:2014-08-01
828:2022-09-18
782:August 25,
755:References
722:Birkhäuser
472:injunction
460:Glenn Babb
306:Bolsheviks
35:1941-06-01
512:In 2006,
468:apartheid
417:consulate
313:Woolworth
186:Education
167:Parent(s)
1309:CBC News
633:COVID-19
612:anti-war
563:and the
555:and the
523:inquests
283:Flushing
155:Children
86:American
84:Canadian
64:, Canada
1169:May 26,
1007:May 28,
986:June 5,
748:3235953
724:, 2010.
670:2003221
662:0367682
640:Arkells
600:Marxist
421:Toronto
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99:Spouses
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567:, and
287:Queens
220:Thesis
45:, U.S.
646:Works
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1171:2024
1063:2024
1034:2024
1009:2024
988:2024
784:2024
734:ISBN
699:ISBN
681:ISBN
627:and
610:and
326:and
124:div.
51:Died
29:Born
491:bar
431:or
419:in
212:LLB
203:PhD
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