| Project/Area Number |
12640154
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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 | Saitama University |
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Principal Investigator |
TSUJIOKA Kunio Professor, Department of Mathematics, Saitama University, 理学部, 教授 (30012412)
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| Co-Investigator(Kenkyū-buntansha) |
KOIKE Shigeaki Professor, Department of Mathematics, Saitama University, 理学部, 教授 (90205295)
NAGASE Masayoshi Professor, Department of Mathematics, Saitama University, 理学部, 教授 (30175509)
YANO Tamaki Professor, Department of Mathematics, Saitama University, 理学部, 教授 (10111410)
SAKURAI Tsutomu Associate Professor, Department of Mathematics, Saitama University, 理学部, 助教授 (40187084)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | controllability / Euler-Bernoulli equation / singular boundary condition / wave equation / optimal control theory / viscositv solution / Hamilton-Jacobi equation / variational equation / 発展方程式 / 有限伝播速度 / 梁の方程式 / 数理ファイナンス / 近似可制御性 / オイラー・ビーム / Kuhn-Tucker / 多目的制御問題 / モーメント問題 / 最短到達時間問題 / 微分ゲーム / 最適化 |
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| Research Abstract |
(1) In the first year of the term of the project, the head investigator researched controllability of a system coupled by two Euler- Bernoulli beams with control at the coupled point. First he studied asymptotic behavior of eigenvalues of a fourth order differential operator related to the Euler-BernouIIi equation. Then controllability problem is reduced a moment problem in a Hilbert space. The method to solve controllability by reducing to a moment problem is called moment problem method. Our ultimate object of the project is to study controllability of a system coupled several Euler-Bernoulli beams. However corresponding moment problem method is too complicated and does not work to our problem. So this problem is still open. In the second and third year of the term of the project, he turned to controllability of evolution equations with singular boundary condition. A boundary condition in an evolution equation is called singular if its order in spatial derivative is as same as that of the equation. We investigated controllability of wave equation with singular boundary condition using moment problem method. A. similar result will be obtained for Euler-Bernoulli equation with singular boundary condition.
(2) Investigator Koike contributed greatly to optimal control theory related to viscosity solution. Various problems are proposed and solved by him.
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