CAMTP Center za uporabno matematiko in teoretično fiziko Univerza v Mariboru, Slovenija

In memoriam Professor Siegfried Grossmann

We deeply regret to inform you that our colleague Professor Dr.Dr.h.c.mult. Siegfried Grossmann, member of Class IV since 1991, Professor Emeritus at the University of Marburg, Germany, passed away on Friday 21 November 2025. Siegfried Grossmann was one of the greatest theoretical physicists of 20th and 21st century, in the world-wide context. His works covered exceptionally broad range of topics, from statistical physics, to fluid dynamics and turbulence theory, to nonlinear dynamics and chaos theory, and more. In recognition of his great contributions to science he was awarded the Max-Planck Medal in 1995, which is the highest award for physics in Germany. In 1996 he was honored by the Großes Verdienstkreuz des Verdienstordens der Bundesrepublik Deutschland, and in 2017 he was elected Honorary Member of the German Physical Society (Ehrenmitglied der Deutschen Physikalischen Gesellschaft), which is reserved for physicists of the highest rank, since 1888. He has been a member of several other academies, e.g. Berlin-Brandenburg Academy of Sciences and Leopoldina. In addition, he was a president of several important scientific advisory boards, over several decades. He was an excellent teacher and mentor, to several generations and author of several textbooks in mathematical and theoretical physics. Professor Grossmann was also editor of several high-ranking physics journals. In recognition of his great work he was awarded honorary doctorates at the University of Duisburg-Essen in 2006 and University of Maribor, Slovenia, in 2011. He was one of the honorary directors of the international summer schools and conferences Let's Face Chaos through Nonlinear Dynamics over decades, taking place in Maribor, where his lectures were the scientific highlights of the meetings.

Siegfried Grossmann was an exceptional scientist, and great personality in all respects. His spirit will continue to inspire us at the highest standards unlimited in time.

Our deepest sympathy is with his three children Christian, Marianne and Peter with families.

REQUIESCAT IN PACE

Marko Robnik, EASA, Class IV, CAMTP, University of Maribor, Slovenia