| Project/Area Number |
16540167
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Basic analysis
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| Research Institution | Osaka Prefecture University (2005-2007)
Osaka Women's University (2004) |
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Principal Investigator |
MATSUMOTO Kazuko Osaka Prefecture University, Faculty of Liberal Arts and Sciences, Associate Professor (60239093)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHITOMI Kentaro Osaka Prefecture University, Faculty of Liberal Arts and Sciences, Lecturer (10305609)
O'UCHI Moto Osaka Prefecture University, Faculty of Liberal Arts and Sciences, Professor (70127885)
渡辺 孝 大阪府立大学, 総合教育研究機構, 教授 (20089957)
加藤 希理子 大阪女子大学, 理学部, 助教授 (00347478)
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| Project Period (FY) |
2004 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,870,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2005: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2004: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | Function Theory / Complex Analysis / Differential Geometry / Plurisubharmonic Function / Curvature / Distance Function / Levi Form / Hypersurface / 多変数関数論 / 擬凸領域 / ケーラー多様体 / レビ平坦曲面 / 可展面 / スタイン多様体 / レビ問題 |
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| Research Abstract |
The purpose of this research is to show the relation with pseudoconvex subdomains and its boundary in Kahler manifolds by using differential-geometric methods. The main tool is the Levi form to the boundary and we studied it explicitly.
The results are the following.
(1) In the case M = C^n , we write explicitly the Levi form of the distance function to a complex submanifold S in C^n by using the defining function of S. As its application, we found the relation with the conditoin for the Levi form to degenerate in complex tangential condition and the condition for the submanifold S to be developable.
(2) In the case M = C^2, we write explicitly the Levi form of the distance function to a real submanifold S in C^2 by using the defining function of S. As its application, we discussed the example of pseudoconvex domains in complex tori showed by Grauert.
(3) In the case M = C^n , we write explicitly the Levi form of the distance function to a real submanifold S in C^n by using the defining function of S, and give a necessary and sufficient condition for the Levi form to degenrrate.
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