Yosuke Morita

Faculty of Mathematics, Kyushu University,
744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
E-mail address: y-moritaATmath.kyushu-u.ac.jp (AT = @)

Photo of me (Dazaifu Tenmangu Shrine, March 2023), Older photo (Gotokuji Temple, January 2018)

日本語版


I plan to stay in Paris from 22 February 2025 to around 26 September 2025.


Papers and Preprints

  1. (with M. Bocheński) Exotic proper actions on homogeneous spaces via convex cocompact representations.
    Preprint. [ arXiv:2501.14274 ]
  2. Conley index theory without index pairs. I: The point-set level theory.
    J. Fixed Point Theory Appl. 25 (2023), Paper No. 15. [ DOI:10.1007/s11784-022-01037-5 ] [ arXiv:2109.10588 ]
    Correction: J. Fixed Point Theory Appl. 26 (2024), Paper No. 2. [ DOI:10.1007/s11784-023-01094-4 ]
  3. Cartan projections of some non-reductive subgroups and proper actions on homogeneous spaces.
    Transform. Groups 29 (2024), 823—845. [ DOI:10.1007/s00031-022-09736-6 ] [ arXiv:2106.07848 ]
  4. Semisimple symmetric spaces that do not model any compact manifold.
    J. Lie Theory 29 (2019), 493—510. [ JLT 29023 ] [ arXiv:1811.01495 ]
  5. Proof of Kobayashi's rank conjecture on Clifford—Klein forms.
    J. Math. Soc. Japan 71 (2019), 1153—1171. [ DOI:10.2969/jmsj/78007800 ] [ arXiv:1705.06544 ]
  6. A cohomological obstruction to the existence of compact Clifford—Klein forms.
    Selecta Math. (N.S.) 23 (2017), 1931—1953. [ DOI:10.1007/s00029-016-0295-1 ] [ arXiv:1601.07359 ]
  7. Homogeneous spaces of nonreductive type that do not model any compact manifold.
    Publ. Res. Inst. Math. Sci. 53 (2017), 287—298. [ DOI:10.4171/PRIMS/53-2-3 ] [ arXiv:1508.04862 ]
  8. Semisimple symmetric spaces without compact manifolds locally modelled thereon.
    Proc. Japan Acad. Ser. A Math. Sci. 91 (2015), 29—33 (announcement). [ DOI:10.3792/pjaa.91.29 ]
  9. A topological necessary condition for the existence of compact Clifford—Klein forms.
    J. Differential Geom. 100 (2015), 533—545. [ DOI:10.4310/jdg/1432842364 ] [ arXiv:1310.7096 ]

Talks


Curriculum Vitae