I do and teach mathematics as Associate Professor at the Department of Mathematics of Ochanomizu University (starting from August 2018, I will move to the University of Oslo). My research interest is in operator algebras, quantum groups, and noncommutative geometry.

- Email: "y" followed by "amashita.makoto@ocha.ac.jp", my PGP public key
- Department of Mathematics, Ochanomizu University, Otsuka 2-1-1, Bunkyo-ku, 112-8610 Tokyo, Japan

- May 13–19: Münster
- June 11–15: Edinburgh
- June 29: seminar at Tokyo Metropolitan University
- July 9–13: lecture series at University of Tokyo
- October 14–19: Banff

- January 21–23: Kyoto

- June 18–22: Ryszard Nest (Copenhagen)

- with J. Bhowmick, S. Ghosh, and N. Rakshit;
*Tube representations and twisting of graded categories*(arXiv:1801.01735) - with K. De Commer, S. Neshveyev, and L. Tuset;
*Ribbon braided module categories, quantum symmetric pairs and Knizhnik–Zamolodchikov equations*(arXiv:1712.08047) - with S. Chakraborty;
*Tracing cyclic homology pairings under twisting of graded algebras*(arXiv:1709.03337) - with S. Neshveyev;
*Categorically Morita equivalent compact quantum groups*(arXiv:1704.04729) *Deformation of algebras associated to group cocycles*(arXiv:1107.2512)

- with J. Bichon and S. Neshveyev;
*Graded twisting of comodule algebras and module categories*, Journal of Noncommutative GeometryJ. Noncommut. Geom.,**12**(2018), no. 1, 2018, pp. 331–368. (arXiv:1604.02078) - with S. Neshveyev;
*A few remarks on the tube algebra of a monoidal category*, Proceedings of the Edinburgh Mathematical SocietyProc. Edinb. Math. Soc., in press. (arXiv:1511.06332) *Monodromy of the Gauss–Manin connection for deformation by group cocycles*, Journal of Noncommutative GeometryJ. Noncommut. Geom.,**11**(2017), no. 4, pp. 1237–1265. (arXiv:1207.6687)- with S. Neshveyev;
*Poisson boundaries of monoidal categories*, Annales scientifiques de l'École Normale Supérieure (4)Ann. Sci. Éc. Norm. Super., série 4**50**(2017), no. 4, 927–972. (arXiv:1405.6572) - with J. Bichon and S. Neshveyev;
*Graded twisting of categories and quantum groups by group actions*, Annales de l'Institut FourierAnn. Inst. Fourier**66**(2016), no. 6, 2299–2338. (arXiv:1506.09194) - with S. Neshveyev;
*Towards a classification of compact quantum groups of Lie type*, Abel Symposia, vol. 12Abel Symposia**12**(2016), 225–257. (arXiv:1603.05519) - with S. Neshveyev;
*Drinfeld center and representation theory for monoidal categories*, Communications in Mathematical PhysicsComm. Math. Phys.**345**(2016), no. 1, 385–434. (arXiv:1501.07390) - with S. Neshveyev;
*Classification of non-Kac compact quantum groups of*SU(n)*type*, International Mathematics Research NoticesInt. Math. Res. Not.,**2016**(2016), no. 11, 3356–3391. (arXiv:1405.6574) - with S. Neshveyev;
*Categorical duality for Yetter–Drinfeld algebras*, Documenta MathematicaDoc. Math.**19**(2014), 1105–1139. (arXiv:1310.4407) - with S. Neshveyev;
*Twisting the q-deformations of compact semisimple Lie groups*, Journal of the Mathematical Society of JapanJ. Math. Soc. Japan**67**(2015), no. 2, 637–662. (arXiv:1305.6949) - with K. De Commer and A. Freslon;
*CCAP for universal discrete quantum groups*, Communications in Mathematical PhysicsComm. Math. Phys.**331**(2014), no. 2, 677–701. (arXiv:1306.6064) - with K. De Commer;
*Tannaka–Kreĭn duality for compact quantum homogeneous spaces. I. General theory*, Theory and Applications of CategoriesTheory Appl. Categ.**28**(2013), no. 31, 1099–1138. (arXiv:1211.6552) - with K. De Commer;
*Tannaka–Kreĭn duality for compact quantum homogeneous spaces. II. Classification of quantum homogeneous spaces for quantum*SU(2), Journal für die reine und angewandte MathematikJ. Reine Angew. Math.**708**(2015), 143–171. (arXiv:1212.3413) - with A. Rennie and A. Sitarz;
*Twisted cyclic cohomology and modular Fredholm modules*, Symmetry, Integrability and Geometry: Methods and ApplicationsSIGMA Symmetry Integrability Geom. Methods Appl.**9**, 51. (arXiv:1111.6328) - with K. De Commer;
*A construction of finite index C*-algebra inclusions from free actions of compact quantum groups*, Publications of the Research Institute for Mathematical SciencesPubl. Res. Inst. Math. Sci.**49**(2013), no. 4, 709–735. (arXiv:1201.4022) *Operator algebra of foliations with projectively invariant transverse measure*, Publications of the Research Institute for Mathematical SciencesPubl. Res. Inst. Math. Sci.**49**(2013), no. 4, 679–708. (arXiv:0711.0790)*Equivariant comparison of quantum homogeneous spaces*, Communications in Mathematical PhysicsComm. Math. Phys.**317**(2013), no. 3, 593–614. (arXiv:1109.2991)*Index character associated with the projective Dirac operator*, Proceedings of the American Mathematical SocietyProc. Amer. Math. Soc.**141**(2013), no. 8, 2923–2932. (arXiv:1107.3007)*On subfactors arising from asymptotic representations of symmetric groups*, Proceedings of the American Mathematical SocietyProc. Amer. Math. Soc.**140**(2012), no. 1, 249–261. (arXiv:0912.0820)*Connes–Landi deformation of spectral triples*, Letters in Mathematical PhysicsLett. Math. Phys.**94**(2010), no. 3, 263–291. (arXiv:1006.4420)

*Graded twisting of quantum groups*, Quantum Probability and its Applications, Tokyo, December 6, 2017*Integrating Gauss–Manin connection by group cohomology*, RIMS Workshop: Recent Developments in Operator Algebras, Kyoto, September 6, 2017*Quantum group symmetry and categorical duality*, lecture series at Nagoya University, Nagoya, June 26–30, 2017*Categorical duality for compact quantum group actions*, lecture series at Topological quantum groups and harmonic analysis, Seoul, May 15–19, 2017*Harmonic analysis on monoidal categories*, lecture series at McGill University, April 18–21, 2017*Weak Morita equivalence of compact quantum groups*, Non-Commutative Analysis, Chennai, February 10, 2017*Drinfeld center, tube algebra, and representation theory for monoidal categories*, Topological quantum groups and Hopf algebras, Warsaw, November 16, 2016*Categorical duality for quantum group actions*, The 9th MSJ-SI: Operator Algebras and Mathematical Physics, Sendai, August 8, 2016*Subfactor and operator system theoretic aspects of categorical Poisson boundary*, Von Neumann Algebras, Bonn, July 5, 2016*Drinfeld center and representation theory for monoidal categories*, 44th Canadian Annual Symposium on Operator Algebras and their Applications (COSy), Montreal, June 14, 2016*Drinfeld center, tube algebra, and representation theory for monoidal categories*, Quantum groups: geometry, representations, and beyond, Oslo, May 13, 2016*Unitary half-braiding and bimodules over the Longo–Rehren/SE-inclusion*, Workshop Classification and Dynamical Systems II: von Neumann algebras, Institut Mittag-Leffler, April 22, 2016- コンパクト群の量子化とテンソル圏的構造の分類，「新しい幾何学に向かって–2」, Tokyo University of Science, February 28, 2016
*Classification problems on the compact quantum groups of Lie type*, The Abel Symposium 2015,*MS Finnmarken*, August 9, 2015*Poisson boundaries of monoidal categories*, the 8th Korean Operator Algebra Seminar, Busan, April 12, 2015- Lecture series on C*-tensor categories and quantum groups at Inst. Math. Sci, Indian Inst. Tech. Madras, and Chennai Math. Inst., March 11–18, 2015
*Deformation of algebras from group 2-cocycles*, Oberwolfach mini-workshop “Deformation Quantization: between formal to strict”, February 19, 2015*Classification of quantum groups and their actions by categorical duality*, RIMS 共同研究「作用素環の分類理論とその周辺」, Kyoto, February 2 & 3, 2015*Equivariant KK-theory and the Borsuk–Ulam theorem for quantum spheres*, The Second China-Japan Conference on Noncommutative Geometry and K-Theory, Okinawa, October 6, 2014*Autoequivalences of tensor categories for twisted q-deformations of quantum groups*, From Poisson brackets to universal quantum symmetries, Warsaw, August 18, 2014*Classification of SU(n)-like non-Kac compact quantum groups*, Quantum Groups and Operator Algebras, Münster, May 9, 2014*Poisson boundary of monoidal categories*, Free probability and the large N limit, IV, Berkeley, March 25, 2014*Classification of SUq(n)-like quantum groups by categorical duality*, Danish-Norwegian Operator Algebra Workshop, Copenhagen, December 12, 2013*Central approximation properties of free quantum groups*, 2013年作用素論・作用素環論研究集会, Ochanomizu University, November 22, 2013*Tannaka-Krein duality for quantum homogeneous spaces*, Oberwolfach workshop “Noncommutative Geometry”, September 14, 2013*Central approximation properties of free quantum groups*, Oberwolfach workshop “C*-Algebren”, August 30, 2013*Equivariant comparison of quantum homogeneous spaces*, Groups, Dynamical Systems and C*-Algebras, Münster, August 23, 2013*Classification of quantum homogeneous spaces*, Theme Week on Quantum Groups and Hopf Cyclic Homology, Fields Institute, Toronto University, June 13, 2013*Classification of quantum homogeneous spaces*, Noncommutative Geometry of Quantum SU(2) revisited, the Mathematical Institute of the Polish Academy of Sciences, Warsaw, December 18, 2012*Gauss–Manin connection for strict deformation associated with group 2-cocycles*, RIMS研究集会「作用素環論の最近の発展と関連する話題について」, September 26, 2012*Deformation of algebras from group 2-cocycles*, 非可換幾何学と数理物理学 2012, Keio University, September 15, 2012*K-theoretic invariance of C*-algebras under continuous deformation with quantum symmetry*, 第51回実函数論函数解析学合同シンポジウム, Tokyo University of Science, August 7, 2012*Deformation of algebras associated to group cocycles*, Noncommutative Geometry and Quantum Groups, Oslo, June 13, 2012*Equivariant comparison of quantum homogeneous spaces*, Topology and Analysis on Foliations (The 11th International Conference by Graduate School of Mathematics, Nagoya University), Nagoya, March 23, 2012*Deformation of algebras associated with group cocycles*, Group actions and K-theory, Department of Mathematics, Kyoto University, March 13, 2012*On subfactors arising from asymptotic representations of symmetric groups*, Danish-Norwegian workshop on operator algebras, Oslo, December 6, 2011*Equivariant comparison of quantum homogeneous spaces*, Banach Center research group New Results in Noncommutative Topology, the Mathematical Institute of the Polish Academy of Sciences, Warsaw, November 7, 2011*On subfactors arising from asymptotic representations of symmetric groups*, Representations of Braid and Symmetric Groups, New Approaches WIMCS Mathematical Physics Cluster Workshop, Aberystwyth, May 3, 2011*Connes-Landi Deformation of Spectral Triples*, EU - NCG 4th Annual Meeting, Bucharest, April 27, 2011*Connes-Landi deformation of spectral triples*, RIMS研究集会「作用素環論の最近の進展について」, Kyoto, September 2, 2010*Connes-Landi deformation of spectral triples*, 非可換幾何学と数理物理学 2010, Keio University, July 2, 2010*Spectral Triples after Connes*, RIMS共同研究「作用素環論と特異点の幾何学」, Kyoto, January 2010*Subfactors from the infinite symmetric group inclusion*, Geometry and Analysis, Paris, December 2009*Right handed vector fields on homogeneous 3-manifolds*, International Workshop on Noncommutative Geometry and Physics, Keio University, February 18, 2009*Operator Algebra of Transversely Affine Foliations*, Japan Math Society annual meeting, March 2008*Affine holonomy foliations*, RIMS共同研究「作用素環と数理物理学の研究」 January 23, 2008*Periodic cyclic (co)homology of foliation algebras*, Functional Analysis Junior Workshop, September 10, 2007

- 『量子群点描』 共立出版 /
*Elements of Quantum Groups*(in Japanese), Kyoritsu Shuppan, 2017 May, ISBN 978-4-320-11313-8

*Noncommutative differential calculus*, note of Boris Tsygan's lecture given at Copenhagen masterclass in 2015*Graph complexes*, note of Thomas Willwacher's lecture given at Copenhagen masterclass in 2015*Orbit Equivalence and Operator Algebras*, note of Narutaka Ozawa's lecture given during winter semester 2006–2007

- with Masamichi Yamashita and M. Saigusa,
*Stand-Alone Temperature / Data Logger for Space Exposure Experiment*[in Japanese], Biological sciences in space 21(2), 27–31, 2007-08-01, CiNii 10019824409

- 日本数学会 地方区代議員 / Representative at Math Society of Japan general assembly (March 2017–February 2018)
- 第50回関数解析研究会
- 日本数学会『数学』 常任編集委員 / Editor of
*Sugaku*for Math Society of Japan (translated as*Sugaku Expositions*(July 2014–June 2016) - 2013年作用素論・作用素環論研究集会

- 科学技術分野の文部科学大臣表彰若手科学者賞 / The Young Scientists’ Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology (April 2018)
- 日本数学会賞建部賢弘特別賞 / MSJ Takebe Katahiro Prize, The Mathematical Society of Japan (September 2016)

- 2018 Autumn: Representation Theory (MAT9270)

2017 Fall/Winter: working seminar on operator algebras and noncommutative geometry

- QFT
- Solution of the Horn conjecture after Knutson–Tao

Please contact me if you are interested in giving a talk at Ochanomizu University.

Working seminar on operator algebras and noncommutative geometry

- A new proof of Tikuisis–Winter–White theorem (03/16, 04/05)
- Cyclotomicity of S-matrices (04/11)
- Khintchine and Grothendieck inequalities: classical and noncommutative (04/25, 05/09)
- Cyclic homology of quantum groups (05/02)
- Modular flow in Poisson geometry (05/24)
- Bessis–Moussa–Villani conjecture (05/31)
- Grothendieck inequality on C*-algebras (06/07)
- Nuclearity and amenability (06/21)
- Equivariant K-groups and Verlinde algebra (07/04, 07/11)
- Uniquely ergodic free minimal
**Z**-action on manifolds (07/25) - Simple nuclear
**T**-C*-algebra not equivariantly isomorphic to its opposite (08/01)

**Sven Raum**(Univ. Kyoto (RIMS) / Univ. Münster)- Title: C*-simplicity of locally compact Powers groups
- Date & time: July 23 (Thu) 2015, 16:30–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 633

**Mikaël Pichot**(McGill Univ.)- Title: Entropy invariants
- Date & time: July 13 (Mon) 2015, 16:30–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 633

**Hochschild / cyclic seminar**at Copenhagen (jointly organized with Tyrone Crisp)**Jennifer Maier**(Univ. Hamburg)- Title:
*Construction of a modular category through equivariant topological field theories* - Date & time: February 19 (Tue) 2013, 16:30–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 633

- Title:
**Kenny De Commer**(Univ. Cergy-Pontoise)- Title:
*Twists and projective representations for locally compact quantum groups* - Date & time: September 20 (Thu) 2012, 16:40–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 633

- Title:
**Yuki Arano**(Univ. Tokyo)- Title:
*Tannaka–Krein duality for compact quantum groups* - Date & time: August 24 (Fri) 2012, 16:30–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 629

- Title:
**Christian Voigt**(Univ. Münster)- Title:
*Quantum groups and K-theory* - Date & time: July 27 (Fri) 2012, 16:30–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 629

- Title:
**Catherine Oikonomides**(Univ. Tokyo)- Title:
*The transverse fundamental class of a foliation: some examples.* - Date & time: July 5 (Thu) 2012, 16:40–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 629

- Title:
**Luca Tomassini**(Univ. Rome “Tor Vergata”)- Title:
*The Moyal plane: distances between translated states and Pythagoras-like relations* - Date & time: June 28 (Thu) 2012, 16:40–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 629

- Title:
**Shweta Sharma**(Univ. Paris Sud XI, Orsay)- Title:
*Power series of SP-type and their resurgence algebra* - Date & time: April 12 (Thu) 2012, 16:30–18:00
- Location: Ochanomizu University, Fac. Sci. Bldg. 1, 6th floor, 633

- Title:

- Noriyuki Abe
- Hiroshi Ando
- Yuki Arano
- Marat Aukhadiev
- Dorothea Bahns
- Erik Bedos
- Julien Bichon
- Dietmar Bisch
- Marcel Bischoff
- Étienne Blanchard
- Chris Bourne
- Mike Brannan
- Branimir Ćaćić
- Sebastiano Carpi
- Martijn Caspers
- Alexandru Chirvasitu
- Nicola Ciccoli
- Benoît Collins
- Alain Connes
- Jason Crann
- Tyron Crisp
- Ludwik Dąbrowski
- Yoann Dabrowski
- Marius Dadarlat
- Biswarup Das
- Kenny De Commer
- Tim de Laat
- Mikael de la Salle
- Siegfried Echterhoff
- Michel Enock
- Chiara Esposito
- David E. Evans
- Pierre Fima
- Amaury Freslon
- Tomohiro Fukaya
- Olivier Gabriel
- Elizabeth Gillaspy
- Sasha Gorokhovsky
- Uffe Haagerup
- Piotr M. Hajac
- Hiroyasu Hamada
- Takashi Hara
- Takahiro Hasebe
- Ben Hayes
- Lars Hesselholt
- Nigel Higson
- Michel Hilsum
- Cyril Houdayer
- Yusuke Isono
- Corey Jones
- Vaughan F.R. Jones
- Kate Juschenko
- Mehrdad Kalantar
- Paweł Kasprzak
- Takeshi Katsura
- Yasu Kawahigashi
- Matthew Kennedy
- David Kerr
- Yoshikata Kida
- Takahiro Kitayama
- Ryosuke Kodera
- Vijay Kodiyalam
- Erik Koelink
- Stefan Kolb
- Uli Krähmer
- Yosuke Kubota
- Kazumasa Kuwada
- David Kyed
- Giovanni Landi
- Nadia S. Larsen
- Hun Hee Lee
- Kang Li
- Roberto Longo
- Jennifer Maier
- Shahn Majid
- Toshihiko Masuda
- Akira Masuoka
- Sho Matsumoto
- Yasumichi Matsuzawa
- Hiroki Matui
- Ralf Meyer
- Masato Mimura
- Michael Müger
- Masaru Nagisa
- Katsuyuki Naoi
- Norio Nawata
- Brent Nelson
- Sergey Neshveyev
- Ryszard Nest
- Réamonn Ó Buachalla
- Rui Okayasu
- Taka Ozawa
- Judy Packer
- Ulrich Pennig
- Dave Penneys
- Emily Peters
- Mikaël Pichot
- Raphaël Ponge
- Sorin Popa
- Florin Radulescu
- Sven Raum
- Jean Renault
- Adam Rennie
- Mikael Rørdam
- Yasuhiko Sato
- Thomas Schick
- Koichi Shimada
- Kenichi Shimizu
- Dima Shlyakhtenko
- Tatiana Shulman
- Thomas Sinclair
- Andrzej Sitarz
- Adam Skalski
- Georges Skandalis
- Piotr Śniady
- Noah Snyder
- Piotr M. Sołtan
- Karen Strung
- V.S. Sunder
- Yuhei Suzuki
- Wojciech Szymański
- Asuka Takatsu
- Takuya Takeishi
- Yoh Tanimoto
- Andreas B. Thom
- Reiji Tomatsu
- Boris Tsygan
- Henry Tucker
- Lars Tuset
- Yoshimichi Ueda
- Stefaan Vaes
- Jean-Michel Vallin
- Erik van Erp
- Roland Vergnioux
- Christian Voigt
- Stefan Waldmann
- Nathalie Wahl
- Stuart White
- Hans Wenzl
- Anna Wysoczańska-Kula
- Stanisław L. Woronowicz
- Shigeru Yamagami
- Bob Yuncken
- Andrzej Żuk

- The Cost of Knowledge
- Fields Institute
- NATS
- The n-Cateory Café
- Noncommutative geometry blog
- Non-Commutative Geometry at Copenhagen
- Kyoto Operator Algebra Seminar
- Operator Algebras in Italy
- Operator Algebra Seminars at University of Tokyo
- Oslo Operator Algebras group
- Projet Algebres d'Operateurs à IMJ