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2017 Fiscal Year Research-status Report

等式の枠組による零形式の時空大域的研究

Research Project

Project/Area Number 16K13771
Research InstitutionWaseda University

Principal Investigator

小澤 徹  早稲田大学, 理工学術院, 教授 (70204196)

Co-Investigator(Kenkyū-buntansha) 田中 和永  早稲田大学, 理工学術院, 教授 (20188288)
BEZ NEAL  埼玉大学, 研究機構, 准教授 (30729843)
Project Period (FY) 2016-04-01 – 2019-03-31
Keywords関数方程式 / 調和解析 / 実解析 / 変分解析
Outline of Annual Research Achievements

当該年度は、理論的にも応用上でも重要ないくつかの函数不等式を等式の枠組で研究し、期待どおりの成果を得る事ができた。特に、ハーディーの不等式とレリッヒの不等式について、等式の枠組みによる定式化を見出し、最良定数を与える非自明な函数の非存在を剰余項消滅条件として特徴づけた。これにより、点列コンパクト性に依存していた従来の議論を、より明確で具体的な議論に書き換えることができた。
これらの成果は
Machihara Shuji, Ozawa Tohru, Wadade Hidemitsu, Remarks on the Hardy type inequalities with remainder terms in the framework of equalities として日本数学会発行の"Advanced Studies in Pure Mathematics" に出版予定であり、
Machihara Shuji, Ozawa Tohru, Wadade Hidemitsu, Remarks on the Rellich inequality としてSpringer社の"Mathematische Zeitschrift"に出版済みである。また、フーリエ制限定理において重要な役割を果たす球面上への跡定理を研究し、その安定性を評価の形で定式化し、証明を与えた。特に、安定性を記述するための「最適化函数の集合からの距離」の評価を双対性を用いた枠組に抽象化し、元々の問題とその双対問題における「最適化函数の集合からの距離」の双対性を見出し、理論化した。その成果は
Bez Neal, Jeavons Chris, Ozawa Tohru, Sugimoto Mitsuru, Stability of trace theorems on the sphere としてSpringer社の"The Journal of Geometric Analysis"に出版済みである。加えて、その他多数の論文を出版し、その成果を研究集会等で発表した。詳しくは10.研究発表の項に記載した。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

研究計画は予定通り順調に進んでいる。現在までの研究で思いがけない着想が幾つか得られており、今後の進展に繋がる事が期待される。

Strategy for Future Research Activity

現在までの研究が順調に進展しているので、今後の推進方策に大きな変更は無い。

Causes of Carryover

(理由)
図書などの洋書や物品費、旅費が当初の予定よりも安価で済み、次年度使用額が生じた。
(使用計画)
研究発表及び分担者との研究グループ強化のための旅費に加える計画である。

  • Research Products

    (20 results)

All 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (10 results) (of which Int'l Joint Research: 10 results,  Invited: 10 results) Remarks (1 results) Funded Workshop (1 results)

  • [Int'l Joint Research] バーミンガム大学(英国)

    • Country Name
      UNITED KINGDOM
    • Counterpart Institution
      バーミンガム大学
  • [Journal Article] Stability of Trace Theorems on the Sphere2018

    • Author(s)
      Bez Neal, Jeavons Chris, Ozawa Tohru, Sugimoto Mitsuru
    • Journal Title

      The Journal of Geometric Analysis

      Volume: 28 Pages: 1456~1476

    • DOI

      10.1007/s12220-017-9870-8

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Remarks on the Hardy type inequalities with remainder terms in the framework of equalities2018

    • Author(s)
      Machihara Shuji, Ozawa Tohru, Wadade Hidemitsu
    • Journal Title

      Adv. Studies Pure Math.

      Volume: 印刷中 Pages: 印刷中

    • Peer Reviewed
  • [Journal Article] Smoothing Estimates for the Kinetic Transport Equation at the Critical Regularity2018

    • Author(s)
      Bez Neal, Cunanan Jayson, Lee Sanghyuk
    • Journal Title

      SIAM Journal on Mathematical Analysis

      Volume: 50 Pages: 2280~2294

    • DOI

      10.1137/17M1148852

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Remarks on the Rellich inequality2017

    • Author(s)
      Machihara Shuji, Ozawa Tohru, Wadade Hidemitsu
    • Journal Title

      Mathematische Zeitschrift

      Volume: 286 Pages: 1367~1373

    • DOI

      10.1007/s00209-016-1805-8

    • Peer Reviewed
  • [Journal Article] Multi-bump solutions for logarithmic Schr\"odinger equations2017

    • Author(s)
      Tanaka Kazunaga, Zhang Chengxiang
    • Journal Title

      Calculus of Variations and Partial Differential Equations

      Volume: 56 Pages: No. 33, 35 pp.

    • DOI

      10.1007/s00526-017-1122-z

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Multiple complex-valued solutions for nonlinear magnetic Schr\"odinger equations2017

    • Author(s)
      Cingolani Silvia, Jeanjean Louis, Tanaka Kazunaga
    • Journal Title

      Journal of Fixed Point Theory and Applications

      Volume: 19 Pages: 37~66

    • DOI

      10.1007/s11784-016-0347-3

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Remarks on the Clark theorem2017

    • Author(s)
      Guosheng Jiang, Tanaka Kazunaga, Zhang Chengxiang
    • Journal Title

      J. Nonlinear Convex Anal.

      Volume: 18 Pages: 1421-1434

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Lifespan of periodic solutions to derivative nonlinear Schr\"odinger equations2018

    • Author(s)
      Ozawa Tohru
    • Organizer
      Nonlinear Dispersive Equations in Kumamoto, 2018
    • Int'l Joint Research / Invited
  • [Presentation] Lifespan of blowup solutions to the nonlinear Schr\"odinger equations on torus2018

    • Author(s)
      Ozawa Tohru
    • Organizer
      Hyperbolic Partial Differential Equations and Related Topics-in honor of the 60th birthday of Professor Tokio Matsuyama-
    • Int'l Joint Research / Invited
  • [Presentation] On improved Hardy inequalities2018

    • Author(s)
      Ozawa Tohru
    • Organizer
      Workshop on Harmonic analysis and Nonlinear Evolution Equations
    • Int'l Joint Research / Invited
  • [Presentation] Minimax methods for scalar field equations with L^2-constraint2018

    • Author(s)
      Tanaka Kazunaga
    • Organizer
      第12回 非線形偏微分方程式と変分問題
    • Int'l Joint Research / Invited
  • [Presentation] A new minimax approach to nonliear scalar field equations with L^2 constraint2018

    • Author(s)
      Tanaka Kazunaga
    • Organizer
      Seminari di Matematica
    • Int'l Joint Research / Invited
  • [Presentation] Lifespan of periodic solutions to nonlinear Schr\"odinger equations2017

    • Author(s)
      Ozawa Tohru
    • Organizer
      RIMS Workshop Nonlinear Wave and Dispersive Equations
    • Int'l Joint Research / Invited
  • [Presentation] Blowup solutions for the derivative nonlinear Schr\"odinger equation on torus2017

    • Author(s)
      Tohru Ozawa
    • Organizer
      Recent topics on PDEs
    • Int'l Joint Research / Invited
  • [Presentation] Multi-bump solutions for logarithmic Schr\"odinger equations2017

    • Author(s)
      Tanaka Kazunaga
    • Organizer
      信州大学偏微分方程式研究集会
    • Int'l Joint Research / Invited
  • [Presentation] Singular perturbation problem for generalized Choquard equations2017

    • Author(s)
      Tanaka Kazunaga
    • Organizer
      the Third Congress of the PRIMA, the Pacific Rim Mathematical Association
    • Int'l Joint Research / Invited
  • [Presentation] Strichartz estimates for orthonormal systems of initial data2017

    • Author(s)
      Bez Neal
    • Organizer
      Nonlinear Partial Differential Equations for Future
    • Int'l Joint Research / Invited
  • [Remarks] 小澤徹研究室

    • URL

      http://www.ozawa.phys.waseda.ac.jp/index2.html

  • [Funded Workshop] "Applied Analysis"2017

URL: 

Published: 2018-12-17   Modified: 2022-02-22  

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