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非線型作用素論と非線型偏微分方程式への応用

Research Project

Project/Area Number 03640125
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 解析学
Research InstitutionChiba University

Principal Investigator

剱持 信幸  千葉大学, 教育学部, 教授 (00033887)

Co-Investigator(Kenkyū-buntansha) 山内 憲一  千葉大学, 教育学部, 助教授 (20009690)
丸山 研一  千葉大学, 教育学部, 助教授 (70173961)
越川 浩明  千葉大学, 教育学部, 助教授 (60000866)
鵜沢 正勝  千葉大学, 教育学部, 教授 (80009026)
蔵野 正美  千葉大学, 教育学部, 教授 (70029487)
Project Period (FY) 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1991: ¥1,900,000 (Direct Cost: ¥1,900,000)
Keywords非線型作用素 / 非線型偏微分方程式 / 解の漸近挙動 / 相転移・相分離 / ステファン問題 / 自由境界問題
Research Abstract

本研究は,非線形現象の解析を目的として,(a)非線形作用素論の研究 (b)非線形偏微分方程式への応用 (c)非線形現象の数学モデルの研究(d)数値解析・シュミレ-ションを細項目として進められた。目的達成には,長期間を必要とする研究テ-マであるが,本研究では,具体的な一つの問題として,「相転移・相分離を伴う現象」の数理科学的考察がとりあげられた。まず熱力学のLandawーGinzburg理論を基礎に,相分離現象の数学モデルを設定した。このモデルは,その表現に,非線形多価作用素(凸汎関数の劣微分作用素)を用いられている。この点で従来のモデルよりもより現実的なものと考えられる。さらに,このモデルは単独の方程式ではなく,非線形発展方程式のシステムである。このモデルに関して1.解の存在。一意性及び正則性 2.時刻t→+∞のときの解の漸近安定性 3.定常解の構造 4.時刻tに関する周期解の存在及びその安定性等の結果が得られた。
上記のモデルとは別に,単独の非線形発展方程式で,時間遅れやメモリ-効果を有する外力項(非局所的項)を持つようなモデルに対しても上記1〜4についての結果が得られた。
得られた結果の一部はすでに発表されており,その他はプレプリントとして公表される段階である。

Report

(1 results)
  • 1991 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] A. Haraux,N. Kenmochi: "Asymptotic behavior of solutions to some degenerate parabolic equations" Funkcialaj Ekvacioj. 34. 19-38 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] N. Kenmochi,T. Koyama: "Nonlinear functional variational inequalities governed by timeーdependent subdifferentials" Nonlinear Analysis. 17. 863-883 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T. Aiki,J. Shinoda,N. Kenmochi: "Periodic stability for some degenerate parabolic equations with nonlinear flux conditions" Nonlinear Analysis. 17. 885-902 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] N. Kenmochi: "Asymptotic stability for nonlinear degenerate parabolic equations with Neumann boundary conditions" Differential and Integral Equations. 4. 803-816 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] A. Kadoya,N. Kenmochi: "Shape optimization for multiーphase Stefan problems" International Series of Numerical Mathematics. 84. 203-213 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] A. Damlamian,N.Kenmochi: "Uniqueness of the solution of a Stefan problem with variable lateral boundary conditions" Advances in Mathematical Sciences and Applications. 1. 174-193 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] H. Koshikawa: "Weakly complex manifolds with semiーfree S^1ーaction whose fixed point set has complex codimension 2" Hokkaido Mathematical Journal. 21. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] N. Kenmochi,T. Koyama,A. Visintin: "On a class of variational inequalities with memory terms" Piman Research Note in Mathematics.

    • Related Report
      1991 Annual Research Report
  • [Publications] A. Kadoya,N. Kenmochi: "Opitimal shape design in multiーphase Stefan problems" Advances in Mathematical Sciences and Applications. 1. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] A. Kadoya,N. Kenmochi: "Shape optimization on the lateral boundary for multiーphase Stefan problems" Nonlinear Analysis. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] K. Yamauchi: "A unit group in a character ring of an alternating group" Hokkaido Mathematical Journal. 20. 549-558 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] K. Yamauchi: "On the units in a character ring" Hokkaido Mathematical Journal. 20. 477-479 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] K. Yamauchi: "On the extensions of group representations over arbitrary fields" Mathematica Japonica. 36. 469-475 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M. Kurano: "Functional characterization for average cost Markov decision processes with Doeblin's conditions" Computers Math. Applic.21. 57-63 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M. Kurano: "Average cost Markov processes under the hypothesis of Doeblin" Annals of Operations Research. 29. 375-388 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M. Kurano,M. Yasuda J. Nakagami,Y. Yoshida: "A limit theorem in some dynamic fuzzy systems" Fuzzy Sets and Systems.

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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