As a project of OCAMI, we shall promote the seminar on differential geometry in the wide sense of including the areas related to geometric analysis, topology, algebraic geometry, mathematical physics, integrable systems, information sciences etc.
| Contact | Yoshihiro Ohnita Hiroshi Tamaru Shin Kato Kaname Hashimoto Masashi Yasumoto Department of Mathematics Osaka City University Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, JAPAN |
| TEL | 06-6605-2617 (Ohnita) 06-6605-2615 (Tamaru) 06-6605-2616 (Kato) |
| ohnita[at]sci.osaka-cu.ac.jp tamaru[at]sci.osaka-cu.ac.jp shinkato[at]sci.osaka-cu.ac.jp h-kaname[at]sci.osaka-cu.ac.jp yasumoto[at]sci.osaka-cu.ac.jp |
| Speaker | Naoya Ando (Kumamoto University) |
| Title | Lecture１ The lifts of surfaces in neutral 4-manifolds into the 2-Grassmann bundles Lecture２ Isotropicity of surfaces in Lorentzian 4-manifolds with zero mean curvature vector |
| Date | March 29 (Mon.) 2021, 13:30 ～ 16:15 |
| Place | Zoom |
| Abstract | Japanese page only |
| Speaker | Yu Kawakami (Kanazawa University) |
| Title | Bernstein型問題の最近の進展について |
| Date | March 13 (Sat.) 2021, 14:00 ～ 15：50 |
| Place | Zoom |
| Abstract | Japanese page only |
| Speaker | Takayuki Koike (Ocaka city University) |
| Title | On the complement of a hypersurface with flat normal bundle which corresponds to a semipositive line bundle |
| Date | October 15 (Thu.) 2020, 17:30 ～ 19:00 |
| Place | Zoom |
| Abstract | We investigate the complex analytic structure of the complement of a non-singular hypersurface with unitary flat normal bundle when the corresponding line bundle admits a Hermitian metric with semipositive curvature. |
| Speaker | Yuichiro Taketomi (OCAMI) |
| Title | Edge coloring graphs and 2-step nilpotent Lie algebras |
| Date | August 7 (Fri.) 2020, 17:30 ～ 19:00 |
| Place | Zoom |
| Abstract | Japanese page only |
| Speaker | Shin Kato (Ocaka city University) |
| Title | 光的直線の彼方の特異点 |
| Date | July 17 (Fri.) 2020, 17:30 ～ 19:00 |
| Place | Zoom |
| Abstract | Japanese page only |
