Citation for awards

Awards and academic honours

Festschrift in Honour of Toshiyuki Kobayashi, 3 volumes, Progress in Mathematics (2025)

Symmetry in Geometry and Analysis, Festschrift in Honor of Toshiyuki Kobayashi. Birkhäuser/Springer, 2025.

Volume 1. Pages xxxi+606. ISBN: 978-981-97-8448-6; 978-981-97-8449-3. DOI: 10.1007/978-981-97-8449-3.
Volume 2. Pages ix+586. ISBN: 978-981-97-7661-0; 978-981-97-7662-7. DOI: 10.1007/978-981-97-7662-7
Volume 3. Pages x+661. ISBN: 978-981-97-7665-8; 978-981-97-7666-5. DOI: 10.1007/978-981-97-7666-5,

Doctorat Honoris Causa, l'universite de Reims Champagne-Ardenne, France (2022)

MSJ Publication Prize (2019)

T. Saito, Y. Kawahigashi, and T. Kobayashi (eds.), Creating Mathematics [Sugaku no Genzai] e / π / i, University of Tokyo Press

AMS Fellow (2017)

Contribution to Structure Theory and Representation Theory of Reductive Lie Groups

JMSJ Outstanding Paper Prize (2015)

J. Hilgert, T. Kobayashi and J. Möllers, Minimal representations via Bessel operators, J. Math. Soc. Japan 66 (2014), 349-414. DOI: 10.2969/jmsj/06620349.

Medal with Purple Ribbon (2014)

Conference in honour of T. Kobayashi 50th birthday (2013)

Group Actions with applications in Geometry and Analysis in honour of Toshiyuki Kobayashi 50th birthday (France)

poster

Inoue Prize for Science (2010)

awarded by the Inoue Foundation for Science
for his analysis on infinite dimensional symmetries.

IPMU News

Humboldt Research Award (2008)

awarded by the Alexander von Humboldt Foundation
for his opening up several new fields in mathematics, including the theory of discrete breaking symmetries, discontinuous group theory beyond the classical Riemannian setting, and the theory of visible action on complex manifolds.

Citation by Toshitake Kohno, Sugaku-Tsushin, Math. Soc. Japan, vol.13, no.3 (in Japanese, pdf)
Citation by the School of Science, the University of Tokyo
Harvard University Gazette
For Communication across the UT, The Universiy of Tokyo (in Japanese)
Graduate School of Arts and Sciences Gazette, The University of Tokyo (in Japanese, pdf)
Suri News, the University of Tokyo (in Japanese, pdf)
photo at the award ceremony

Sackler Distinguished Lecturer (2007)

Branching Problems of Unitary Representations (2 lectures), Sackler Distinguished Lectures in Pure Mathematics, Tel Aviv University, Israel, 7 & 9 May 2007. [ full info ]

JSPS Prize (2007)

awarded by the Japan Society for the Promotion of Science (JSPS)
for his theory of Lie groups—their infinite dimensional representations and discontinuous groups.

Citation by JSPS (in Japanese, pdf)
Citation by Toshio Oshima, Sugaku-Tsushin, Math. Soc. Japan, vol.11, no.4 (in Japanese, pdf)
Discoveries at the age of twenty-five, and mathematics expanding beyond oneself, Japanese Scientific Monthly, vol.60, no.5 (an essay by T. Kobayashi, in Japanese)
photo at the prizegiving ceremony

Osaka Science Prize (2006)

awarded by Osaka Prefecture, Osaka City and Osaka Science & Technology Center
for his discovery of the theory of discontinuous groups beyond Riemannian geometry, and discovery of the theory of discretely decomposable branching laws for infinite dimensional representations.

Citation by Tetsuji Miwa presented at the press conference (in Japanese, pdf)
Citation by Osaka Prefecture and Osaka Science & Technology Center
Biographical sketch and citation by Kyoto University (in Japanese)
Citation by Toshio Oshima, Sugaku-Tsushin, Math. Soc. Japan, vol.11, no.4 (in Japanese, pdf)

ICM 2002 (invited address)

Branching Problems of Unitary Representations, International Congress of Mathematicians (ICM 2002), Beijing, China, 20-28 August 2002. [ full info ]

Spring Prize (1999)

awarded by the Mathematical Society of Japan
for his theory of branching laws of unitary representations.

Citation by Toshio Oshima and Takayuki Oda, Sugaku, Math. Soc. Japan, vol.51, no.4 (in Japanese, pdf)
Citation by Yukihiko Namikawa, Sugaku, Math. Soc. Japan, vol.51, no.4 (in Japanese, pdf)
Theory of discrete decomposable branching laws of unitary representations of semisimple Lie groups and some applications, Sugaku, Math. Soc. Japan, vol.51, no.4 (an expository article based on the Award Lecture by T. Kobayashi, in Japanese) and its English translation, Sugaku Expositions, vol.18, AMS

Takebe Prize (1997)

awarded by the Mathematical Society of Japan
for his non-commutative harmonic analysis on homogeneous spaces.

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