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Advances in FEM-based numerical verification method in a new stage

Research Project

Project/Area Number 20H01820
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 12040:Applied mathematics and statistics-related
Research InstitutionHitotsubashi University

Principal Investigator

KOBAYASHI Kenta  一橋大学, 大学院経営管理研究科, 教授 (60432902)

Co-Investigator(Kenkyū-buntansha) 土屋 卓也  大阪大学, 数理・データ科学教育研究センター, 招へい研究員 (00163832)
渡部 善隆  九州大学, 情報基盤研究開発センター, 准教授 (90243972)
劉 雪峰  東京女子大学, 現代教養学部, 教授 (50571220)
高安 亮紀  筑波大学, システム情報系, 准教授 (60707743)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywords精度保証付き数値計算 / 有限要素法 / 補間誤差評価 / 補間誤差解析 / 非線形偏微分方程式 / 不連続ガレルキン法 / 逆作用素ノルム / Navier-Stokes方程式 / 計算機援用証明 / 誤差評価 / 制度保証付き数値計算
Outline of Research at the Start

本研究課題においては、近年の計算機の性能の向上と、有限要素法および精度保証付き数値計算に関してこれまで蓄積された知見を元に、空間3次元の非線形偏微分方程式に対する精度保証付き数値計算を飛躍的に進展させたいと考えています。この目的を達成するため、まずは3次元問題に精度保証付き数値計算を適用するための基盤整備、すなわち3次元有限要素法の誤差解析および効率的な精度保証手法の構築を行い、次いで、流体方程式など、数学的に重要な非線形偏微分方程式に対する精度保証の応用を実現します。

Outline of Final Research Achievements

Error analysis of the finite element method plays an essential role in the numerical verification method based on the finite element method. Furthermore, error analysis of the finite element method is closely related to interpolation error analysis on manifolds in 2D and 3D space, such as triangles, quadrilaterals, tetrahedra, and hexahedra. In this research, we have improved the error estimation of various finite element methods, such as conforming and nonconforming finite element methods, by refining the error analysis for various types of interpolations. Based on this improvement, we have made the numerical verification method more efficient. We could also apply the improved techniques to the numerical verification of actual nonlinear equations.

Academic Significance and Societal Importance of the Research Achievements

数値計算により数学的に厳密な結果を得る、いわゆる精度保証付き数値計算は、近年、単なる数値計算結果の品質保証だけではなく、無限次元空間における不動点定理の成立を厳密に保証することにより関数方程式の解の存在や一意性を証明する等、応用範囲が拡大しています。精度保証付き数値計算の手法のうちでも有力なのが、有限要素法をベースにした方法です。この手法においては、有限要素法の誤差解析が重要な役割を果たしますが、本研究の成果により、精度保証付き数値計算の手法がより効率化され、より広い範囲の関数方程式への応用が可能になると期待できます。

Report

(5 results)
  • 2024 Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (91 results)

All 2024 2023 2022 2021 2020

All Journal Article (28 results) (of which Int'l Joint Research: 15 results,  Peer Reviewed: 28 results,  Open Access: 16 results) Presentation (63 results) (of which Int'l Joint Research: 18 results,  Invited: 13 results)

  • [Journal Article] Correction to: General theory of interpolation error estimates on anisotropic meshes2023

    • Author(s)
      Ishizaka Hiroki、Kobayashi Kenta、Tsuchiya Takuya
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics

      Volume: 40 Issue: 2 Pages: 1355-1356

    • DOI

      10.1007/s13160-023-00582-x

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Shape optimization for the Laplacian eigenvalue over triangles and its application to interpolation error analysis2023

    • Author(s)
      Endo Ryoki、Liu Xuefeng
    • Journal Title

      Journal of Differential Equations

      Volume: 376 Pages: 750-772

    • DOI

      10.1016/j.jde.2023.09.016

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Projection-based guaranteed L2 error bounds for finite element approximations of Laplace eigenfunctions2023

    • Author(s)
      Liu Xuefeng、Vejchodsky Tomas
    • Journal Title

      Journal of Computational and Applied Mathematics

      Volume: 429 Pages: 115164-115164

    • DOI

      10.1016/j.cam.2023.115164

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Guaranteed local error estimation for finite element solutions of boundary value problems2023

    • Author(s)
      Nakano Taiga、Liu Xuefeng
    • Journal Title

      Journal of Computational and Applied Mathematics

      Volume: 425 Pages: 115061-115061

    • DOI

      10.1016/j.cam.2023.115061

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Verified eigenvalue and eigenvector computations using complex moments and the Rayleigh?Ritz procedure for generalized Hermitian eigenvalue problems2023

    • Author(s)
      Imakura Akira、Morikuni Keiichi、Takayasu Akitoshi
    • Journal Title

      Journal of Computational and Applied Mathematics

      Volume: 424 Pages: 114994-114994

    • DOI

      10.1016/j.cam.2022.114994

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anisotropic interpolation error estimates using a new geometric parameter2023

    • Author(s)
      Hiroki Ishizaka, Kenta Kobayashi, Takuya Tsuchiya
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics

      Volume: 40 Issue: 1 Pages: 475-512

    • DOI

      10.1007/s13160-022-00535-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inclusion method of optimal constant with quadratic convergence for $H_0^1$-projection error estimates and its applications2023

    • Author(s)
      Takehiko Kinoshita and Yoshitaka Watanabe and Nobito Yamamoto and Mitsuhiro T. Nakao
    • Journal Title

      Journal of Computational and Applied Mathematics

      Volume: 417 Pages: 114521-114521

    • DOI

      10.1016/j.cam.2022.114521

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Efficient Approaches for Verifying the Existence and Bound of Inverse of Linear Operators in Hilbert Spaces2023

    • Author(s)
      Yoshitaka Watanabe and Takehiko Kinoshita and Mitsuhiro T. Nakao
    • Journal Title

      Journal of Scientific Computing

      Volume: 94 Issue: 2 Pages: 43-43

    • DOI

      10.1007/s10915-023-02097-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Guaranteed Lower Eigenvalue Bounds for Steklov Operators Using Conforming Finite Element Methods2023

    • Author(s)
      Nakano Taiga、Li Qin、Yue Meiling、Liu Xuefeng
    • Journal Title

      Computational Methods in Applied Mathematics

      Volume: - Issue: 2 Pages: 495-510

    • DOI

      10.1515/cmam-2022-0218

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Saddle-Type Blow-Up Solutions with Computer-Assisted Proofs: Validation and Extraction of Global Nature2023

    • Author(s)
      Lessard Jean-Philippe、Matsue Kaname、Takayasu Akitoshi
    • Journal Title

      Journal of Nonlinear Science

      Volume: 33 Issue: 3 Pages: 46-46

    • DOI

      10.1007/s00332-023-09900-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Improvement of infinity norm estimations related to computer-assisted proofs of the Kolmogorov problem2022

    • Author(s)
      Kobayashi Kenta、Watanabe Yoshitaka
    • Journal Title

      JSIAM Letters

      Volume: 14 Issue: 0 Pages: 92-95

    • DOI

      10.14495/jsiaml.14.92

    • ISSN
      1883-0609, 1883-0617
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] On Some Convergence Properties for Finite Element Approximations to the Inverse of Linear Elliptic Operators2022

    • Author(s)
      Takehiko Kinoshita and Yoshitaka Watanabe and Mitsuhiro T. Nakao
    • Journal Title

      Acta Cybernetica

      Volume: -- Issue: 1 Pages: 71-82

    • DOI

      10.14232/actacyb.294906

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fully computable a posteriori error bounds for eigenfunctions2022

    • Author(s)
      Liu Xuefeng、Vejchodsky Tomas
    • Journal Title

      Numerische Mathematik

      Volume: 152 Issue: 1 Pages: 183-221

    • DOI

      10.1007/s00211-022-01304-0

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Error-constant estimation under the maximum norm for linear Lagrange interpolation2022

    • Author(s)
      Galindo Shirley Mae、Ike Koichiro、Liu Xuefeng
    • Journal Title

      Journal of Inequalities and Applications

      Volume: 2022 Issue: 1

    • DOI

      10.1186/s13660-022-02841-w

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Computer-assisted proof for the stationary solution existence of the Navier?Stokes equation over 3D domains2022

    • Author(s)
      Liu Xuefeng、Nakao Mitsuhiro T.、Oishi Shin’ichi
    • Journal Title

      Communications in Nonlinear Science and Numerical Simulation

      Volume: 108 Pages: 106223-106223

    • DOI

      10.1016/j.cnsns.2021.106223

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rigorous numerics for nonlinear heat equations in the complex plane of time2022

    • Author(s)
      Takayasu Akitoshi、Lessard Jean-Philippe、Jaquette Jonathan、Okamoto Hisashi
    • Journal Title

      Numerische Mathematik

      Volume: 151 Issue: 3 Pages: 693-750

    • DOI

      10.1007/s00211-022-01291-2

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Singularities and heteroclinic connections in complex-valued evolutionary equations with a quadratic nonlinearity2022

    • Author(s)
      Jaquette Jonathan、Lessard Jean-Philippe、Takayasu Akitoshi
    • Journal Title

      Communications in Nonlinear Science and Numerical Simulation

      Volume: 107 Pages: 106188-106188

    • DOI

      10.1016/j.cnsns.2021.106188

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lectures on the error analysis of interpolation on simplicial triangulations without the shape regularity assumption and its applications to finite element methods. part 1: Lagrange interpolation on triangles2022

    • Author(s)
      小林健太, 土屋卓也
    • Journal Title

      愛媛大学理学部紀要

      Volume: 24 Pages: 9-42

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Robust Algebraic Curve Intersections with Tolerance Control2022

    • Author(s)
      Shao Wenbing、Chen Falai、Liu Xuefeng
    • Journal Title

      Computer-Aided Design

      Volume: 147 Pages: 103236-103236

    • DOI

      10.1016/j.cad.2022.103236

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Global dynamics in nonconservative nonlinear Schr?dinger equations2022

    • Author(s)
      Jaquette Jonathan、Lessard Jean-Philippe、Takayasu Akitoshi
    • Journal Title

      Advances in Mathematics

      Volume: 398 Pages: 108234-108234

    • DOI

      10.1016/j.aim.2022.108234

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A new geometric condition equivalent to the maximum angle condition for tetrahedrons2021

    • Author(s)
      Ishizaka Hiroki、Kobayashi Kenta、Suzuki Ryo、Tsuchiya Takuya
    • Journal Title

      Computers & Mathematics with Applications

      Volume: 99 Pages: 323-328

    • DOI

      10.1016/j.camwa.2021.08.017

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A robust discontinuous Galerkin scheme on anisotropic meshes2021

    • Author(s)
      Kashiwabara Takahito、Tsuchiya Takuya
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics

      Volume: 38 Issue: 3 Pages: 1001-1022

    • DOI

      10.1007/s13160-021-00474-y

    • NAID

      210000181401

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Computer-assisted proofs of the existence of a symmetry-breaking bifurcation point for the Kolmogorov problem2021

    • Author(s)
      Cai Shuting、Watanabe Yoshitaka
    • Journal Title

      Journal of Computational and Applied Mathematics

      Volume: 395 Pages: 113603-113603

    • DOI

      10.1016/j.cam.2021.113603

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Crouzeix-Raviart and Raviart-Thomas finite-element error analysis on anisotropic meshes violating the maximum-angle condition2021

    • Author(s)
      Ishizaka Hiroki、Kobayashi Kenta、Tsuchiya Takuya
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics

      Volume: 38 Issue: 2 Pages: 645-675

    • DOI

      10.1007/s13160-020-00455-7

    • NAID

      210000174512

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Explicit a posteriori and a priori error estimation for the finite element solution of Stokes equations2021

    • Author(s)
      Liu Xuefeng, Nakao Mitsuhiro T., You Chun’guang, Oishi Shin’ichi
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics

      Volume: 未定 Issue: 2 Pages: 545-559

    • DOI

      10.1007/s13160-020-00449-5

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] General theory of interpolation error estimates on anisotropic meshes2020

    • Author(s)
      Ishizaka Hiroki、Kobayashi Kenta、Tsuchiya Takuya
    • Journal Title

      Japan Journal of Industrial and Applied Mathematics

      Volume: 38 Issue: 1 Pages: 163-191

    • DOI

      10.1007/s13160-020-00433-z

    • NAID

      210000175823

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical validation of blow-up solutions with quasi-homogeneous compactifications2020

    • Author(s)
      K. Matsue and A. Takayasu
    • Journal Title

      Numerische Mathematik

      Volume: 145 Issue: 3 Pages: 605-654

    • DOI

      10.1007/s00211-020-01125-z

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A computer-assisted proof for nonlinear heat equations in the complex plane of time2020

    • Author(s)
      Takayasu Akitoshi
    • Journal Title

      RIMS Kokyuroku Bessatsu

      Volume: B82 Pages: 47-66

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] Error estimation for the FEM solution with a few bad elements2024

    • Author(s)
      Kenta Kobayashi
    • Organizer
      Seventh Chilean Workshop on Numerical Analysis of Partial Differential Equations (WONAPDE 2024)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 悪い要素を含む有限要素解の誤差解析2024

    • Author(s)
      小林健太
    • Organizer
      北陸応用数理研究会2024
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Some computer-assisted proofs for nonlinear differential equations involved with self-similar blowup in wave equations2024

    • Author(s)
      Yoshitaka Watanabe
    • Organizer
      Nonlinear Analysis, Spectral theory and PDEs, Workshop in Honor of Prof. Dr. Michael Plum
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 近似楕円型線形作用素のノルムに関する収束性評価の改良2024

    • Author(s)
      木下武彦, 渡部善隆, 中尾充宏
    • Organizer
      日本応用数理学会第20回(2024年)研究部会連合発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 線形作用素の近似逆作用素ノルムに対する精度保証付き数値計算2024

    • Author(s)
      寺尾剛史, 渡部善隆, 尾崎克久
    • Organizer
      日本応用数理学会第20回(2024年)研究部会連合発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 実2×2行列の2ノルムと近似逆作用素ノルムの収束オーダーの改善について2024

    • Author(s)
      木下武彦, 渡部善隆, 中尾充宏
    • Organizer
      日本数学会2024年年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 無限次元線形作用素の近似逆作用素ノルムに対する精度保証付き特異値計算2024

    • Author(s)
      寺尾剛史, 渡部善隆, 尾崎克久
    • Organizer
      日本数学会2024年年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A rigorous integrator and global existence for higher-dimensional semilinear parabolic PDEs via semigroup theory2024

    • Author(s)
      Akitoshi Takayasu
    • Organizer
      Workshop of Computational Science and Information Engineering 2024 (SCIE2024)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Error estimation for the FEM solution with a few bad elements2023

    • Author(s)
      Kenta Kobayashi
    • Organizer
      International Congress on Industrial and Applied Mathematics (ICIAM2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 悪い形の要素がそれほど多くないときの有限要素法の誤差評価2023

    • Author(s)
      小林健太
    • Organizer
      隠岐島応用数学研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A computer-assisted proof for a nonlinear differential equation involved with self-similar blowup in wave equations2023

    • Author(s)
      Yoshitaka Watanabe, Kaori Nagatou, Michael Plum, Birgit Schorkhuber, and Mitsuhiro T. Nakao
    • Organizer
      International Congress on Industrial and Applied Mathematics (ICIAM2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 精度保証付き数値計算によるProudman-Johnson方程式の単峰性解の存在検証2023

    • Author(s)
      渡部善隆, 宮路智行
    • Organizer
      日本数学会2023年度秋季総合分科会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 非線形波動方程式の自己相似爆発解に対する精度保証付き数値計算2023

    • Author(s)
      渡部善隆
    • Organizer
      RIMS共同研究(公開型)「新時代における高性能科学技術計算法の探究」
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Recent Results of Rigorous Numerical Integration for Higher Spatial Dimensional PDEs2023

    • Author(s)
      Akitoshi Takayasu, Gabriel Duchesne, Jean-Philippe Lessard
    • Organizer
      SIAM Conference on Applications of Dynamical Systems
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Rigorous forward numerical integration of general evolutionary partial differential equations based on semigroup theory2023

    • Author(s)
      Akitoshi Takayasu, Gabriel Duchesne, Jean-Philippe Lessard
    • Organizer
      IUTAM Symposium on Nonlinear dynamics for design of mechanical systems across different length/time scales (IUTAM 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Rigorous numerics for finding the monodromy of Picard-Fuchs differential equations for a family of K3 toric hypersurfaces2023

    • Author(s)
      Akitoshi Takayasu, Toshimasa Ishige
    • Organizer
      International Congress on Industrial and Applied Mathematics (ICIAM2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Global Dynamics and Blowup in Some Quadratic PDEs2023

    • Author(s)
      Jonathan Jaquette, Jean-Philippe Lessard, Akitoshi Takayasu
    • Organizer
      International Congress on Industrial and Applied Mathematics (ICIAM2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Approximation of minimal surfaces by the method of fundamental solution2023

    • Author(s)
      土屋卓也
    • Organizer
      環瀬戸内ワークショップ
    • Related Report
      2022 Annual Research Report
  • [Presentation] 楕円型線形作用素に対する近似逆作用素ノルムの収束性評価2023

    • Author(s)
      木下武彦, 渡部善隆, 中尾充宏
    • Organizer
      日本応用数理学会2023年研究部会連合発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 2階楕円型線形作用素に対する近似逆作用素ノルムの収束オーダー評価2023

    • Author(s)
      木下武彦, 渡部善隆, 中尾充宏
    • Organizer
      日本数学会2023年年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Rigorous integrator for higher spatial dimensional PDEs2022

    • Author(s)
      Takayasu, Akitoshi, Lessard, Jean-Philippe
    • Organizer
      SIAM Conference on Nonlinear Waves and Coherent Structures (NWCS22)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A general approach for rigorously integrating PDEs using semigroup theory2022

    • Author(s)
      Takayasu, Akitoshi
    • Organizer
      CRM Applied Mathematics Seminars
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 異方的なメッシュ上でも頑健な不連続Galerkin法について2022

    • Author(s)
      土屋卓也
    • Organizer
      第27回計算工学講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Proudman-Johnson方程式の定常解に対する精度保証付き数値計算 ~Miyaji-Okamoto定理の別証~2022

    • Author(s)
      渡部善隆
    • Organizer
      日本応用数理学会2022年度年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 精度保証付き数値計算によるProudman Johnson 方程式の定常解の存在別証2022

    • Author(s)
      渡部善隆
    • Organizer
      日本数学会2022年度秋季総合分科会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 半群理論に基づく一般的な時間発展方程式に対する厳密な数値求積法2022

    • Author(s)
      高安亮紀
    • Organizer
      2022年度応用数学合同研究集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 常微分方程式の爆発解の漸近展開と無限遠ダイナミクスの対応2022

    • Author(s)
      松江要, 落合啓之, 小谷久寿, 高安亮紀
    • Organizer
      2022年度応用数学合同研究集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 遅延Duffing方程式の結合系の完全同期解に対する精度保証付き数値計算2022

    • Author(s)
      高橋和暉, 高安亮紀
    • Organizer
      RIMS 共同研究(公開型)時間遅れ系と数理科学:理論と応用の新たな展開に向けて
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 時間発展方程式に対する厳密な数値求積法の最近の進展2022

    • Author(s)
      高橋和暉, 高安亮紀
    • Organizer
      RIMS 共同研究(公開型)数値解析が拓く次世代情報社会~エッジから富岳まで~
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Chebyshev補間の最大値最小値の精度保証付き数値計算2022

    • Author(s)
      近藤慎佑, 高安亮紀
    • Organizer
      日本応用数理学会2022年度年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 遅延Duffing方程式の結合系に対する同期解の精度保証付き数値計算2022

    • Author(s)
      高橋和暉, 高安亮紀
    • Organizer
      日本応用数理学会2022年度年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 2階楕円型境界値問題から導かれる近似作用素ノルムの収束性2022

    • Author(s)
      渡部善隆, 木下武彦, 中尾充宏
    • Organizer
      日本応用数理学会2022年研究部会連合発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] A computer-assisted proof toward the critical Reynolds number for the Orr-Sommerfeld problem2022

    • Author(s)
      Yoshitaka Watanabe, Kaori Nagatou, Michael Plum, Takehiko Kinoshita, Mitsuhiro T. Nakao
    • Organizer
      International Workshop on Reliable Computing and Computer-Assisted Proofs (ReCAP 2022)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] OrrSommerfeld方程式の臨界Reynolds数に対する計算機援用証明2022

    • Author(s)
      渡部善隆、長藤かおり、Michael Plum、木下武彦、中尾充宏
    • Organizer
      日本数学会2022年年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Chebyshev interpolation for rigorous integrator of differential equations2022

    • Author(s)
      Akitoshi Takayasu
    • Organizer
      International Workshop on Reliable Computing and Computer-Assisted Proofs (ReCAP 2022)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 異方的なメッシュ上での有限要素誤差解析について2021

    • Author(s)
      土屋卓也
    • Organizer
      東京大学数値解析セミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 四面体の最大角条件と同値な幾何学的条件について2021

    • Author(s)
      土屋卓也
    • Organizer
      第26回計算工学講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 定常Kolmogorov問題の対称性破壊分岐点に対する精度保証付き数値計算2021

    • Author(s)
      渡部善隆
    • Organizer
      日本応用数理学会2021年度年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] On some convergence properties for finite element approximations to the inverse of linear elliptic operators2021

    • Author(s)
      Takehiko Kinoshita, Yoshitaka Watanabe, and Mitsuhiro T. Nakao
    • Organizer
      19th GAMM-IMACS International Symposium on Scientific Computing, Computer Arithmetic, and Validated Numerics (SCAN 2020)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Kolmogorov問題の対称性破壊分岐点に対する計算機援用証明2021

    • Author(s)
      渡部善隆
    • Organizer
      日本数学会2021年度秋季総合分科会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 非線形微分方程式に対する精度保証付き数値計算2021

    • Author(s)
      渡部善隆
    • Organizer
      CREST「現代の数理科学と連携するモデリング手法の構築」 成果報告公開シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 非線形熱方程式の複素時間領域における解の精度保証付き数値計算2021

    • Author(s)
      高安亮紀
    • Organizer
      東京大学数値解析セミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Global dynamics in nonconservative nonlinear Schrodinger equations2021

    • Author(s)
      高安亮紀
    • Organizer
      京都大学NLPDEセミナー
    • Related Report
      2021 Annual Research Report
  • [Presentation] Rigorous integrator for dissipative PDEs using the Chebyshev-Fourier spectral method2021

    • Author(s)
      Akitoshi Takayasu, Jean-Philippe Lessard
    • Organizer
      Conference on Applications of Dynamical Systems (DS21)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Swift-Hohenberg方程式の厳密な数値求積法2021

    • Author(s)
      高安亮紀
    • Organizer
      日本応用数理学会2021年度年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] A rigorous forward integration method for time-dependent PDEs2021

    • Author(s)
      Akitoshi Takayasu, Jean-Philippe Lessard
    • Organizer
      19th GAMM-IMACS International Symposium on Scientific Computing, Computer Arithmetic, and Validated Numerics (SCAN 2020)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ある連立遅延微分方程式系の星形周期解ー数値的根拠と精度保証ー2021

    • Author(s)
      高安亮紀
    • Organizer
      RIMS共同研究(公開型)時間遅れ系と数理科学:理論と応用の新たな展開に向けて
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Singularities and heteroclinic connections in complex-valued evolutionary equations with a quadratic nonlinearity2021

    • Author(s)
      高安亮紀, Jonathan Jaquette, Jean-Philippe Lessard
    • Organizer
      2021年度応用数学合同研究集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Kolmogorov問題に対する計算機援用証明における最大値ノルム評価とその応用2021

    • Author(s)
      小林健太, 渡部善隆
    • Organizer
      日本応用数理学会2021年研究部会連合発表会
    • Related Report
      2020 Annual Research Report
  • [Presentation] A robust discontinuous Galerkin scheme on anisotropic meshes2021

    • Author(s)
      土屋卓也
    • Organizer
      IAS conference Industrial and Applied Mathematics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Global dynamics in a quadratic nonlinear Schrodinger equation2021

    • Author(s)
      Jonathan Jaquette, Jean-Philippe Lessard, 高安亮紀
    • Organizer
      日本数学会2021年度年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 遅延微分方程式に対する精度保証付き数値計算ー現状と課題ー2021

    • Author(s)
      高安亮紀
    • Organizer
      第2回 時間遅れと数理セミナー
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Global existence and heteloclinics/homoclinics to a quadratic nonlinear Schrodinger equation2021

    • Author(s)
      Akitoshi Takayasu
    • Organizer
      Czech-Japanese Seminar in Applied Mathematics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 重調和方程式の近似解に対する構成的誤差評価の改良2021

    • Author(s)
      渡部善隆, 木下武彦, 中尾充宏
    • Organizer
      日本数学会2021年年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 異方的三角形分割上でもロバストな不連続Galerkinスキーム2020

    • Author(s)
      土屋卓也
    • Organizer
      日本数学会2020年度秋季総合分科会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 異方的三角形分割上でもロバストな不連続Galerkinスキーム2020

    • Author(s)
      土屋卓也
    • Organizer
      日本応用数理学会2020年度年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Computer-assisted proofs of heteloclinic orbits to a quadratic nonlinear Schrodinger equation2020

    • Author(s)
      高安亮紀, Jonathan Jaquette, Jean-Philippe Lessard
    • Organizer
      2020年度応用数学合同研究集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Global dynamics in a quadratic nonlinear Schrodinger equation2020

    • Author(s)
      高安亮紀
    • Organizer
      第4回 精度保証付き数値計算の実問題への応用研究集会 (NVR 2020)
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Computer-assisted proofs for finding the monodromy of hypergeometric differential equations2020

    • Author(s)
      Akitoshi Takayasu
    • Organizer
      16th Seminar Series of CRM CAMP in Nonlinear Analysis
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Homoclinics and global existence of solutions to a quadratic nonlinear Schrodinger equation2020

    • Author(s)
      高安亮紀, Jonathan Jaquette
    • Organizer
      日本数学会2020年度秋季総合分科会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 非線形シュレディンガー方程式の厳密な数値求積法2020

    • Author(s)
      高安亮紀
    • Organizer
      日本応用数理学会2020年度年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Hilbert空間における線形作用素に対する可逆性検証の効率化とその応用2020

    • Author(s)
      渡部善隆, 木下武彦, 中尾充宏
    • Organizer
      日本数学会2020年度秋季総合分科会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Hilbert空間における線形作用素に対する可逆性検証の効率化2020

    • Author(s)
      渡部善隆, 木下武彦, 中尾充宏
    • Organizer
      日本応用数理学会2020年度年会
    • Related Report
      2020 Annual Research Report

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Published: 2020-04-28   Modified: 2026-01-16  

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