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作用素の有界性を中心とした関数空間の研究と偏微分方程式への応用

Research Project

Project/Area Number 17J01766
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Basic analysis
Research InstitutionTokyo Metropolitan University

Principal Investigator

中村 昌平  首都大学東京, 理工学研究科, 特別研究員(PD)

Project Period (FY) 2017-04-26 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2019: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2018: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2017: ¥900,000 (Direct Cost: ¥900,000)
Keywordsストリッカーツ評価式 / フーリエ拡張作用素 / 溝畑・竹内予想 / X線トモグラフィー / 熱流単調性 / ストリッカーツ評価 / カールソンの各点収束問題 / 荷重の理論 / 非線形シュレディンガー方程式
Outline of Annual Research Achievements

本年度は正規直交系を初期値に持つ,種々の分散型方程式(波動方程式,クライン-ゴルドン方程式,分数階シュレディンガー方程式)に対するストリッカーツ評価式を研究し証明を与えることに成功した.加えてその結果を方程式の適切性,輸送方程式の解の速度平均,ベゾフ空間型の不等式の改良に応用し論文の形にまとめ投稿した.また8月から12月までの間に英国のバーミンガム大学において,Jonathan Bennett教授との共同研究を進めた.具体的には,フーリエ拡張作用素に関連する未解決問題への工学的なアプローチの研究である.特に溝畑・竹内予想として知られている,フーリエ拡張作用素の重み付き不等式に対して,X線によるトモグラフィーの原理を適用することで新たな進展を生んだ.すなわち,X線により調べたい対象を「スキャン」し対象のより詳細な性質を引き出すというものである.このアイデア自体は去年度からあったものであるが,今年度は実際にそのアイデアを形にすることができた.
また,Brascamp-Liebの不等式の研究にも進展を生んだ.具体的には近年,Barthe-Wolffによって得られたinverse Brascamp-Liebの不等式を,熱流単調性を用いたアプローチで解析した.Barthe-Wolffらは最適輸送の理論を応用することで,この不等式を解析し証明を与えているが,本研究では最適輸送の手法の代わりに熱方程式を用いた解析を行い,inverse Brascamp-Liebの不等式と他の不等式とのより深い関係を明らかにすることに成功した.

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (25 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (5 results) Journal Article (9 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 9 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 6 results,  Invited: 10 results)

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

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ソウル大学校(韓国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Kiel University(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Seoul National university(韓国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Seoul National University(韓国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Weighted local Morrey spaces2020

    • Author(s)
      Nakamura Shohei, Sawano Yoshihiro, Tanaka Hitoshi
    • Journal Title

      Ann. Acad. Sci. Fenn. Math.

      Volume: 45

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The orthonormal Strichartz inequality on torus2019

    • Author(s)
      Nakamura Shohei
    • Journal Title

      Transactions of the American Mathematical Society

      Volume: 373 Issue: 2 Pages: 1455-1476

    • DOI

      10.1090/tran/7982

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the Strichartz estimates for orthonormal systems of initial data with regularity2019

    • Author(s)
      Bez Neal、Hong Younghun、Lee Sanghyuk、Nakamura Shohei、Sawano Yoshihiro
    • Journal Title

      Advances in Mathematics

      Volume: 354 Pages: 106736-106736

    • DOI

      10.1016/j.aim.2019.106736

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Multiplier conditions for Boundedness into Hardy spaces2018

    • Author(s)
      L. Grafakos, S. Nakamura, H. V. Nguyen, Y. Sawano
    • Journal Title

      Math. Nachr

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Conditions for Boundedness into Hardy spaces2018

    • Author(s)
      L. Grafakos, S. Nakamura, H. V. Nguyen, Y. Sawano
    • Journal Title

      Ann. Inst. Fourier (Grenoble)

      Volume: 印刷中

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] New function spaces related to Morrey spaces and the Fourier transform2018

    • Author(s)
      Nakamura Shohei、Sawano Yoshihiro
    • Journal Title

      Banach Journal of Mathematics

      Volume: 12 Issue: 1 Pages: 1-30

    • DOI

      10.1215/17358787-2017-0014

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] harpness of the Brascamp-Lieb inequality in Lorentz space2017

    • Author(s)
      N. Bez, S. Lee, S. Nakamura and Y. Sawano
    • Journal Title

      Electron. Res. Announc. Math. Sci

      Volume: 24 Pages: 53-63

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Complex interpolation of smoothness Morrey subspaces2017

    • Author(s)
      D. I. Hakim, S. Nakamura and Y. Sawano
    • Journal Title

      Constructive Approximation

      Volume: 46 Pages: 489-563

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Fractional Operators on Weighted Morrey Spaces2017

    • Author(s)
      Nakamura Shohei、Sawano Yoshihiro、Tanaka Hitoshi
    • Journal Title

      J. Geom. Anal

      Volume: 印刷中 Issue: 2 Pages: 1502-1524

    • DOI

      10.1007/s12220-017-9876-2

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] On the pointwise convergence problem to the Schrodinger equation for infinitely many particles2019

    • Author(s)
      中村昌平
    • Organizer
      NLPDEセミナー(京都大学)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Tomography bounds for the Fourier extension operator2019

    • Author(s)
      中村昌平
    • Organizer
      Harmonic Analysis and Non- linear Partial Differential Equations
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The pointwise convergence of the one-dimensional Schrodinger equation2019

    • Author(s)
      中村昌平
    • Organizer
      7th East Asian Conference in Harmonic Analysis and Applications
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tomography bounds for the Fourier extension operator2019

    • Author(s)
      S. Nakamura
    • Organizer
      埼玉数理解析セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Tomography bounds for the Fourier extension operator2019

    • Author(s)
      S. Nakamura
    • Organizer
      調和解析セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] On the orthonormal Strichartz inequality2018

    • Author(s)
      S. Nakamura
    • Organizer
      Analysis seminar in Birmingham University
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On the orthonormal Strichartz inequality2018

    • Author(s)
      S. Nakamura
    • Organizer
      Analysis seminar in Kiel University
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On the Strichartz estimates for orthonormal system of initial data with regularity2017

    • Author(s)
      S. Nakamura
    • Organizer
      名古屋微分方程式セミナー
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] On the Strichartz estimates for orthonormal system of initial data with regularity2017

    • Author(s)
      S. Nakamura
    • Organizer
      阪大微分方程式セミナー
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] On the Strichartz inequality for orthonormal system2017

    • Author(s)
      S. Nakamura
    • Organizer
      5th East Asian conference in Harmonic analysis and applications
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On the Strichartz estimates for orthonormal systems of initial data with regularity2017

    • Author(s)
      S. Nakamura
    • Organizer
      TOPICS IN HARMONIC ANALYSIS, Seoul National University
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2017-05-25   Modified: 2024-03-26  

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