Avec le départ de Pavel Winternitz le 13 février 2021, le CRM (Centre de recherches mathématiques) a perdu l’une de ses lumières fondatrices, source d’inspiration et d’encouragement pour les générations successives d’étudiants, de jeunes chercheurs et de collègues reconnaissants, et le DMS a perdu l’un de ses professeurs les plus distingués.

Pavel a obtenu une maitrise à l’Univeristé de Saint Petersburg et ensuite un doctorat (1966) au Joint Institute for Nuclear Research, Dubna (Russie), sous la direction de J. A. Smorodinsky, en se spécialisant dans les méthodes de théorie des groupes en physique. Il a ensuite poursuivi son travail comme chercheur principal à Dubna (poste conjoint avec l’Institute for Nuclear Research au Rez/Prague, République tchèque), se concentrant sur les symétries et l’utilisation de la théorie de groupes pour les amplitudes de diffusion. Il s’est ainsi fait un nom reconnu dans ces domaines.

Avec l’invasion soviétique de 1968, il quitte Prague et son poste a Dubna, passant un an au Royaume-Uni, au Rutherford High Energy Laboratory et à Dublin Institute for Advanced Studies. Ensuite, il a passé trois années à Pittsburgh, la première à Carnegie Mellon University et les deux suivantes à l’University of Pittsburgh.

Arrivé au CRM il y a près d’un demi-siècle, quatre ans seulement après sa création, il est devenu, avec son collègue Jiri Patera, l’un de ses chefs de file comme chercheur à plein temps. Avec une passion inépuisable pour la recherche, il a poursuivi une carrière extrêmement productive au long du demi-siècle qui a suivi, apportant de nombreuses contributions importantes au développement de la physique mathématique et contribuant à renforcer la réputation du CRM dans le monde en tant que centre majeur de recherche. Pendant toute cette période, il a supervisé avec dévouement de nombreux étudiants et boursiers postdoctoraux, dont plusieurs ont continué à faire leurs propres marques par la suite.

Il a été extraordinairement prolifique tout au long de sa carrière, avec près de 300 articles publiés dans des revues avec comité de lecture et 125 actes de conférence. Il a largement contribué à l’application des méthodes de symétrie en physique mathématique et à la théorie des systèmes complètement intégrables. Son excellence en recherche lui a valu plusieurs prix et distinctions importants. En 2001, il a reçu le prix CAP-CRM de physique théorique et mathématique; en 2003, il a été nommé membre étranger de l’Académie mexicaine des sciences ; en 2006, il a été nommé Docteur Honoris Causa par Czech Technical University à Prague ; in 2011, il a reçu le prix “Ceska Hlava- Patria” du gouvernement de la République tchèque; et en 2018, il a reçu la médaille Wigner pour ses « contributions exceptionnelles à la compréhension de la physique par la théorie des groupes ».

En juin 2020, il a été nommé professeur émérite au DMS. En décembre 2019, après une carrière de 47 ans comme chercheur au CRM et professeur au Département de mathématiques et de statistique (DMS) de l’Université de Montréal, Pavel Winternitz a officiellement pris sa retraite, mais sans diminuer significativement ses activités de recherche et de supervision des étudiants.

Au cours des nombreuses années de sa carrière, il a développé un impressionnant réseau de collaborateurs internationaux, dont beaucoup ont passé de longs séjours scientifiques au CRM. Grâce au dynamisme de son équipe, le CRM est devenu un pôle d’excellence pour la recherche en physique mathématique. Beaucoup de ses résultats sont considérés comme des développements fondamentaux, dont certains portent désormais son nom.

Au-delà de ses apports scientifiques, sa gentillesse, son humanité et sa générosité ont été grandement appréciées par tous ceux qui l’ont connu, et nombreux sont ceux qui ont bénéficié de ses encouragements et de son soutien. L’éventail de ses intérêts et de ses compétences était très large, englobant une portée culturelle, scientifique et humaine d’une ampleur et d’une profondeur uniques. Nous nous souviendrons tous affectueusement de lui et regrettons profondément sa perte.

With the departure of Pavel Winternitz on February 13, 2021, the CRM (Centre de recherches mathématiques) has lost one of its founding lights, a source of inspiration and encouragement to successive generations of students, young researchers and appreciative colleagues, and the DMS has lost one of its most distinguished faculty members.

Pavel completed his master’s degree at the St. Petersburg University and then a Ph.D. (1966) at Joint Nuclear Research Institute in Dubna, Russia, under the supervision of J. A. Smorodinsky, specializing in group theoretical methods in physics. He then continued working in Dubna as a senior researcher (joint appointment with Institute for Nuclear Research in Rez/Prague, Czech Republic), focusing on symmetries and group theoretical expansions of scattering amplitudes, making a considerable name for himself.

With the 1968 Soviet invasion, he left Prague and his position at Dubna, spending a year in the UK, at the Rutherford High Energy Laboratory, and at the Dublin Institute for Advanced Studies. He spent the next three years in Pittsburgh, first at Carnegie Mellon University and then at University of Pittsburgh. 

Arriving at the CRM nearly a half century ago, in 1972, just four years after it was created, he became, with his colleague Jiri Patera, one of its leading lights and full-time researchers. With an enduring passion for research, he continued to pursue a long and productive career throughout the following half century, making many significant contributions to the development of mathematical physics and helping to enhance the reputation of the CRM worldwide as a major center for research. Throughout this time, he devotedly supervised many students and postdoctoral fellows, several of whom who went on to making their own subsequent marks.

He was extraordinarily prolific throughout his career, with nearly 300 published articles appearing in peer-reviewed journals and 125 conference proceedings. He contributed substantially to the application of symmetry methods in mathematical physics, and the theory of completely integrable systems.

His research excellence earned him several important awards and honours. In 2001 he was recipient the CAP-CRM Prize in Theoretical and Mathematical Physics; in 2003 he was elected a foreign member of the Mexican Academy of Sciences; in 2006 he was awarded a Doctorate Honoris Causa by the Czech Technical University in Prague; in 2011 he received the award “Ceska Hlava- Patria” given by Czech government; and in 2018, he was awarded the Wigner medal for “outstanding contributions to the understanding of physics through group theory.”

Last June, he was named Professor Emeritus at the DMS. In December 2019, after a 47-year career as a researcher at the CRM and Professor at the Université de Montréal’s Department of Mathematics and Statistics (DMS), Pavel Winternitz officially retired, but without significantly diminishing his research activities and student supervision.

Throughout the many years of his career, he developed an impressive network of international collaborators, many of whom spent extended scientific stays at the CRM. Thanks to the dynamism of his team, the CRM became recognized as a pole of excellence for research in mathematical physics. Many of his results are considered as foundational developments, some of which now bear his name.

Beyond his scientific contributions, his kindness, humanity and generosity were greatly appreciated by all who knew him, and there were very many who benefited from his encouragement and support. The range of his interests and skills was vast, encompassing a cultural, scientific and human scope of unique breadth and depth. He will be fondly remembered by us all and sorely missed.

Nous accueillons vos témoignages à l'adresse: communication@crm.umontreal.ca
We welcome your testimonies at: communication@crm.umontreal.ca
Nous perdons un grand ami qui aura fait beaucoup pour nous, pour le CRM et pour la science à Montréal. La médaille Wigner et même son éméritat dernièrement lui auront fait bien plaisir. Gardons parmi tant d’autres souvenirs ces moments de réjouissance qui ont reconnu sa passion pour la recherche et un homme de grande envergure.
Luc Vinet
Directeur de CRM
Je suis très triste d’apprendre la disparition de Pavel. Je n’oublierai jamais sa gaieté, sa gentillesse et son dynamisme. Je lui suis très reconnaissant de m’avoir invité plusieurs fois au CRM dès le début de ma carrière scientifique. Pavel a profondément marqué la physique mathématique.
Jean-Pierre Françoise
Professeur Sorbonne-Université
I am deeply grieved to hear the unexpected passing of Professor Winternitz. Please accept my sincerest condolences on this sad event. My thoughts are with you all at this most difficult time. I pray from the bottom of my heart that his soul may rest in peace.
Hideaki Ujino
Division of Natural Sciences and Mathematics National Institute of Technology, Gunma College
Pavel was a wonderful person, a great scientist and an influential person who inspired many scientists all around the world. We cannot express how sad we are to hear his passing. From the first moment that I met with him in Italy at 2004 until recently, he was not only my mentor as a scientist but also together with Milada they became part of our family. The unforgettable moments that we shared both scientifically and socially will always live in our minds. It will always be a great honour for me to have a chance to work with him. We will miss him very much… Our deepest condolences to Milada, to the family and to all who know him.
Ismet Yurdusen
an earlier postdoc of Pavel Winternitz from Turkey) Sema Yurdusen, Ada Selin Yurdusen (wife and daughter)
It was with great sorrow to learn about the passing of prof. Pavel Winternitz. We all lost a remarkable scientist and renaissance man whose collaborations spanned the world. I lost my advisor, mentor, and collaborator, whom I met in 1992, and who led me through my Ph.D. studies and offered advice throughout my career. Pavel and his wife Milada became friends to me and my husband, and we loved to join them for long dinners or shorter lunches. We will never forget times spent discussing science and world events or spending time outdoors skiing and canoeing with him. Our condolences to his wife Milada, his sons Peter and Michael and their families.
Zora Thomova and Martin Thoma (husband)
PhD student
I've just found out from your website that Professor Winternitz has passed away. Please accept my sincere condolences. He was a really good person and an outstanding scientist.
Alexander Zhalij
post-doc CRM 2002-2004
My heartfelt condolences to you, Milada, and the extended Winternitz family for your tremendous loss. I am very grateful to Pavel for teaching me about Lie-point symmetries-- a subject I knew little about in 1989. Pavel was a terrific person and a great mentor to young mathematicians. He was generous with his time, knowledge, and ideas. I also wanted to thank you, Milada, for your enduring support to Pavel's research enterprise and for the warm welcome and hospitality youextended to visitors. Your dedicated support helped Pavel flourish in his passionate pursuit of knowledge. Pavel will be dearly missed.
Willy Hereman
Colorado School of Mines
The CRM has lost one of its founding lights, a source of inspiration and encouragement to successive generations of students, young researchers and appreciative colleagues. Pavel Winternitz already had a respected reputation as a leading advocate of group theoretical methods in physics when he came to the CRM, as one of its first permanent researcher, shortly after its creation, and continued his long and productive career there over the following half century. He made many significant contributions to the development of mathematical physics and helped enhance the reputation of the CRM worldwide, and its recognition as a major center for basic research. He continued actively pursuing his research work with enduring passion at the CRM's mathematical physics laboratory, while supervising many students and postdoctoral fellows, several of whom who went on to make their own subsequent marks. The range of his interests and skills were very wide, encompassing a cultural and human scope of unique breadth and depth. His kindness, humanity and generosity were greatly appreciated by all who knew him, and there were very many who benefited from his encouragement and support. To me, personally, he was both a mentor and a cherished friend. He will be sorely missed by us all.
John Harnad
Director, CRM's Mathematical Physics Lab