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1996 Fiscal Year Final Research Report Summary

Functional Analysis and Partial Differential Equations

Research Project

Project/Area Number 07640243
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 解析学
Research InstitutionGakushuin University, Faculty of Science

Principal Investigator

KURODA Shigetoshi  Gakushuin Univ., Dept.of Mathematics, Professor, 理学部, 教授 (20011463)

Co-Investigator(Kenkyū-buntansha) MITSUI Takayoshi  Gakushuin Univ., Dept.of Mathematics, Professor, 理学部, 教授 (20080484)
IITAKA Shigeru  Gakushuin Univ., Dept.of Mathematics, Professor, 理学部, 教授 (20011588)
KATASE Kiyoshi  Gakushuin Univ., Dept.of Mathematics, Professor, 理学部, 教授 (70080489)
MIZUTANI Akira  Gakushuin Univ., Dept.of Mathematics, Professor, 理学部, 教授 (80011716)
FUJIWARA Daisuke  Gakushuin Univ., Dept.of Mathematics, Professor, 理学部, 教授 (10011561)
Project Period (FY) 1995 – 1996
KeywordsSchrodinger equation / Spectral theory / Semi-linear elliptic boundary value problem / Feynmann integral / Pass integral / Degenerate non-linear parabolic equations / Explicit method / Finite element approximation
Research Abstract

1. Spectral Theory. A substaintial generalization of the distributional rank-one perturbation theory due to B.Simon et al was made. Systematic applications to point and surface interactions will be the subject of future investigation. Another topics of research was the theory of eigenvalue distribution of modified scattering matrix due to R.D.Yafaev and it is shown that the theoryis applicable to problems with non-spherically symmetric vector potentials.
2. Pass Integfral and asymptotic analysis. Continuing previous research, it was shown that time-slicing approximations converge to the path integral in the strong topology. A simple and direct new proof of theorems of Kumano-go-Taniguchi type was given.
3. Numerical analysis of Schrodinger equations. Finite step explicit method for time-dependent Schrodinger equation was investigated from a new viewpoint and an algorithn for non-linear Schroodinger equation was proposed.
4. Semi-linear elliptic boundary value problems. It was shown that based on the Nehari variational principle some kind of unstable solutions can be constructed in numerically efficient ways and the effectiveness of the method was confirmed by numeraicl experiments.
5. Degenerate non-linear parabolic equations. Finite difference approximations were investigated and for some specific problems the convergence of approximate solution to the true solution was proved. Numerical experiments were also performed.
6. Real analysis method. As applications of real analysis methods some problems of weighted estimates were obtained for the inverse of the Schrodinger operator with certain potentials. In the field of classical real analysis some norm estimates of Kakeya's maximal function were obtained for functions with separable variables.
7. Complex dynamical system. New knowledge were obtained about the periodicity of heperbolic points of the Mandelbrot set and the behavior of the dynamical system around Misiurewicz points.

  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 黒田 成俊 S.T.Kuroda: "Product formulas and error estimates" Partial Differential Operators and Mathematical Physics,M.Demuth and B.W.Schulze,ed.Birkhauser. (国際会議報告集). 213-220 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤原 大輔 Daisuke Fujiwara: "The stationary phase method with remainder estimate as dimension of the space goes to infinity" Partial Differential Operators and Mathematical Physics,M.Demuth and B.W.Schulze,ed.Birkhauser. (国際会議報告集). 135-140 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤原 大輔 Daisuke Fujiwara: "The time slicing approximation of the fundamental solution for the Schrodinger equation with electromagnetic fields" J.Math.Soc.Japan. (近刊).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 水谷 明 Akira Mizutani: "On the iterative and minimizing sequences for semilinear elliptic equations(I)" Japan J.Indust.Appl.Math.12. 309-326 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 水谷 明 Akira Mizutani: "On the iterative and minimizing sequences for semilinear elliptic equations(II)" Japan J.Indust.Appl.Math.13. 351-367 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 飯高 茂 Shigeru Iitaka: "Classification of algebraic objects" Proc.3rd Intrn.Colloq.on finite and infinite dimensional complex analysis,Ewha Womens University. (国際会議報告集). 13-28 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kuroda, S.T.(with K.Kurata): "Product formulas and error estimates" Partial Differential Operators and Mathematical Physics, M.Demuth and B.W.Schulze, ed.Birkhauser. 213-220 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fujiwara, Daisuke (with T.Tsuchida): "The stationary phase method with remainder estimate as dimension of the space goes to infinity" Partial Differential Operators and Mathematical Physics, M.Demuth and B.W.Schulze, ed.Birkhauser. 135-140 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fujiwara, Daisuke: "The time slicing approximation of the fundamental solution for the Schrodinger equation with electromagnetic fields" J.Math.Soc.Japan. (to appear).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mizutani, Akira (with T.Suzuki): "On the iterative and minimizing sequences for semilinear elliptic equations (I)" Japan J.Indust.Appl.Math.12. 309-326 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mizutani, Akira (with T.Suzuki): "On the iterative and minimizing sequences for semilinear elliptic equations (II)" Japan J.Indust.Appl.Math.13. 351-367 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Iitaka, Shigeru: "Classification of algebraic objects" Proc.3rd Intrn.Colloq.on finite and infinite dimensional complex analysis, Ewha Womens University.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tanaka, Hitoshi: "An elementary proof of an estimate for the Kakeya maximal operator on functions of product type" Tohoku Math.J.48. 429-435 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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