Makoto Yamashita

Makoto Yamashita / 山下 真

seminar at Osloseminar at Oslo
at Oberwolfach (2015.02.19),
by Chiara Esposito

I do and teach mathematics as Assistant Professor at the Department of Mathematics of Ochanomizu University. My research interest is in operator algebras, quantum groups, and noncommutative geometry.

お茶の水女子大学 お茶大アカデミック・プロダクション 所属の助教として,数学の研究と理学部数学科での教育をしています。

Direction for visitors Curriculum Vitæ (PDF) relevant papers (BibTEX)

Contact

  • Email: , my PGP public key
  • Department of Mathematics, Ochanomizu University, Otsuka 2-1-1, Bunkyo-ku, 112-8610 Tokyo, Japan
  • 〒112-8610 東京都文京区大塚 2-1-1 お茶の水女子大学 理学部数学科

Schedule

2016

Upcoming Guests

  • October 14–January 31, 2017: Sergey Neshveyev (Oslo)

Research

Preprints

  1. with J. Bichon and S. Neshveyev; Graded twisting of comodule algebras and module categories (arXiv:1604.02078)
  2. with S. Neshveyev; A few remarks on the tube algebra of a monoidal category (arXiv:1511.06332)
  3. Monodromy of Gauss–Manin connection for deformation by group cocycles (arXiv:1207.6687)
  4. Deformation of algebras associated to group cocycles (arXiv:1107.2512)

Papers

  1. with S. Neshveyev; Poisson boundaries of monoidal categories, to appear in Ann. Sci. École Norm. Sup. (arXiv:1405.6572)
  2. with J. Bichon and S. Neshveyev; Graded twisting of categories and quantum groups by group actions, to appear in Ann. Inst. Fourier (arXiv:1506.09194)
  3. with S. Neshveyev; Towards a classification of compact quantum groups of Lie type, to appear in Abel Symposia, vol. 12 (arXiv:1603.05519)
  4. 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)
  5. 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)
  6. with S. Neshveyev; Categorical duality for Yetter–Drinfeld algebras, Documenta MathematicaDoc. Math. 19 (2014), 1105–1139. (arXiv:1310.4407)
  7. 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)
  8. 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)
  9. 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)
  10. 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)
  11. 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)
  12. 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)
  13. 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)
  14. Equivariant comparison of quantum homogeneous spaces, Communications in Mathematical PhysicsComm. Math. Phys. 317 (2013), no. 3, 593–614. (arXiv:1109.2991)
  15. 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)
  16. 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)
  17. Connes–Landi deformation of spectral triples, Letters in Mathematical PhysicsLett. Math. Phys. 94 (2010), no. 3, 263–291. (arXiv:1006.4420)

Conference talks

  1. Subfactor and operator system theoretic aspects of categorical Poisson boundary, Von Neumann Algebras, Bonn, July 5, 2016
  2. Drinfeld center, tube algebra, and representation theory for monoidal categories, Quantum groups: geometry, representations, and beyond, Oslo, May 13, 2016
  3. 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
  4. 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
  5. Classification problems on the compact quantum groups of Lie type, The Abel Symposium 2015, MS Finnmarken, August 9, 2015
  6. Poisson boundaries of monoidal categories, the 8th Korean Operator Algebra Seminar, Busan, April 12, 2015
  7. 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
  8. Deformation of algebras from group 2-cocycles, Oberwolfach mini-workshop “Deformation Quantization: between formal to strict”, February 19, 2015
  9. 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」, February 2 & 3, 2015
  10. 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
  11. Autoequivalences of tensor categories for twisted q-deformations of quantum groups, From Poisson brackets to universal quantum symmetries, Warsaw, August 18, 2014
  12. Classification of SU(n)-like non-Kac compact quantum groups, Quantum Groups and Operator Algebras, Münster, May 9, 2014
  13. Poisson boundary of monoidal categories, Free probability and the large N limit, IV, Berkeley, March 25, 2014
  14. 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
  15. Tannaka-Krein duality for quantum homogeneous spaces, Oberwolfach workshop “Noncommutative Geometry”, September 14, 2013
  16. Central approximation properties of free quantum groups, Oberwolfach workshop “C*-Algebren”, August 30, 2013
  17. Equivariant comparison of quantum homogeneous spaces, Groups, Dynamical Systems and C*-Algebras, Münster, August 23, 2013
  18. Classification of quantum homogeneous spaces, Theme Week on Quantum Groups and Hopf Cyclic Homology, Fields Institute, Toronto University, June 13, 2013
  19. Classification of quantum homogeneous spaces, Noncommutative Geometry of Quantum SU(2) revisited, the Mathematical Institute of the Polish Academy of Sciences, Warsaw, Dec. 18, 2012
  20. 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
  21. 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
  22. 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
  23. Deformation of algebras associated to group cocycles, Noncommutative Geometry and Quantum Groups, Oslo, June 13, 2012
  24. 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
  25. Deformation of algebras associated with group cocycles, Group actions and K-theory, Department of Mathematics, Kyoto University, March 13, 2012
  26. On subfactors arising from asymptotic representations of symmetric groups, Danish-Norwegian workshop on operator algebras, Oslo, December 6, 2011
  27. 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, Nov 7, 2011
  28. 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
  29. Connes-Landi Deformation of Spectral Triples, EU - NCG 4th Annual Meeting, Bucharest, Apr. 27, 2011
  30. 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」, Sept. 2, 2010
  31. Connes-Landi deformation of spectral triples, 非可換幾何学と数理物理学 2010, Keio University, July 2, 2010
  32. Spectral Triples after Connes, RIMS共同研究「作用素環論と特異点の幾何学」, Jan. 2010
  33. Subfactors from the infinite symmetric group inclusion, Geometry and Analysis, Paris, 2009 Dec.
  34. Right handed vector fields on homogeneous 3-manifolds, International Workshop on Noncommutative Geometry and Physics, Keio University, Feb. 18, 2009
  35. Operator Algebra of Transversely Affine Foliations, Japan Math Society annual meeting, Mar. 2008
  36. Affine holonomy foliations, RIMS共同研究「作用素環と数理物理学の研究」 Jan. 23, 2008
  37. Periodic cyclic (co)homology of foliation algebras, Functional Analysis Junior Workshop on Sept. 10, 2007

Notes

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

Non-mathematical

  1. 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

Community services

  1. 第50回関数解析研究会
  2. 日本数学会『数学』常任編集委員 (July 2014–June 2016)
  3. 2013年作用素論・作用素環論研究集会

Teaching

Seminar

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

Past

  1. 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
  2. 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
  3. Hochschild / cyclic seminar at Copenhagen (jointly organized with Tyrone Crisp)
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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