学位

• 博士（理学）(筑波大学)

経歴

学歴

受賞

その他

論文

• On second order weakly hyperbolic equations and the ultradifferentiable classes [DOI] [Web of Scientce] [Scopus] [Scopus]
• On asymptotic behaviour of solutions to linear differential systems with variable coeffcients via characteristic numbers [DOI] [Web of Scientce] [Scopus] [Scopus]
• Oscillatory properties for semilinear degenerate hyperbolic equations of second order [DOI] [Web of Scientce] [Scopus] [Scopus]
• Levi conditions to the gevrey well-posedness for hyperbolic operators of higher order [DOI] [Web of Scientce] [Scopus] [Scopus]
• Well-posedness of the cauchy problem in gevrey classes for some weakly hyperbolic equations of higher order [DOI] [Scopus] [Scopus]
• On a sharp Levi condition in Gevrey classes for some infinitely degenerate hyperbolic equations and its necessity [DOI] [Scopus] [Scopus]
• On the Cauchy problem for finitely degenerate hyperbolic equations of second order [DOI] [Scopus] [Scopus]

その他業績

• On second order weakly hyperbolic equations and the ultradifferentiable classes [DOI] [Web of Scientce]
• On second order weakly hyperbolic equations and the ultradifferentiable classes [DOI]
• On Asymptotic Behaviour of Solutions to Linear Differential Systems with Variable Coefficients via Characteristic Numbers [DOI] [Web of Scientce]
• 退化双曲型方程式に対する振動定理について
• On asymptotic behavior of solutions to linear differential systems with variable coefficients via characteristic numbers [DOI]
• Oscillatory properties for semilinear degenerate hyperbolic equations of second order [DOI] [Web of Scientce]
• 新しい特性数による変数係数線形微分方程式系の解の挙動について
• Levi conditions to the Gevrey well-posedness for hyperbolic operators of higher order [DOI] [Web of Scientce]
• Levi conditions to the Gevrey well-posedness for hyperbolic operators of higher order
• Oscillatory properties for semilinear degenerate hyperbolic equations of second order [DOI]
• Colombini-Taglialatela 型の Levi 条件の改良への試み
• 多項式位数の解をもつ線形常微分方程式系の性質について
• Asymptotic behaviour of solutions to systems of linear ODEs with variable coefficients via characteristic numbers
• An endeavor to improve the Levi condition of Colombini and Taglialatela type
• Asymptotic behaviour of solutions to systems of linear ODEs with variable coefficients via characteristic numbers
• 荷重関数による高階双曲型方程式に対するレビ条件
• コロンビーニ・タリアラテラによるレビ条件の変種
• 半線形退化双曲型方程式に対する振動性質
• 半線形退化双曲型方程式に対する振動性質Ｉ
• Levi conditions for higher order hyperbolic equations by weight functions
• A variant of the Levi condition by Colombini and Taglialatela
• Oscillatory properties for semilinear degenerate hyperbolic equations
• Oscillatory properties for semilinear degenerate hyperbolic equations I
• Ｓ．ベルンシュタインの定理と関連した解析関数の挙動
• Asymptotic of analytic functions related with S. Bernstein's theorem
• 技術革新の普及を表すマンスフィールドモデルの拡張について
• On some extension of E. Mansfield's model on the spread of technological innovation
• 発展方程式に対する初期値問題の C^∞ 適切性
• C^∞ wellposedness of the Cauchy problem for evolution equations
• Well-posedness of the Cauchy problem in Gevrey classes for some weakly hyperbolic equations of higher order [Web of Scientce]
• Well-posedness of the Cauchy problem in Gevrey classes for some weakly hyperbolic equations of higher order
• On a sharp Levi condition in Gevrey classes for some infinitely degenerate hyperbolic equations and its necessity [DOI] [Web of Scientce]
• On a sharp Levi condition in Gevrey classes for some infinitely degenerate hyperbolic equations and its necessity [DOI]
• On the Cauchy problem for finitely degenerate hyperbolic equations of second order [Web of Scientce]
• The initial value problem for some degenerate hyperbolic equations of second order in Gevrey classes
• On the Cauchy problem for finitely degenerate hyperbolic equations of second order
• The Cauchy problem for weakly hyperbolic equations of second order [CiNii Books] [CiNii Research] [Othres link]
• The Cauchy problem for weakly hyperbolic equations of second order
• Global smooth solutions of semilinear weakly hyperbolic equations with logarithmic nonlinearity
• Global smooth solutions of semilinear weakly hyperbolic equations with logarithmic nonlinearity
• On uniform well-posedness of the abstract Cauchy problem [CiNii Books] [CiNii Research] [Othres link] [Othres link]
• On uniform well-posedness of the abstract Cauchy problem

講演・口頭発表等

書籍等出版物

• 理工系 基礎数学演習 [CiNii Books]
• 級数と微分方程式 [CiNii Books]
• 理工系 基礎数学演習

作品等

共同研究・競争的資金等の研究課題

• 対角化による双曲型方程式の解のエネルギー評価法
• Energy estimates for solutions of hyperbolic equations via refined diagonalizations
• 退化双曲型方程式に対する振動理論
• Oscillation Theory for Degenerate Hyperbolic Equations
• 非線形弱双曲型方程式に対する大域可解性
• 弱双曲型方程式に対する初期値問題の適切性
• Global solvability for nonlinear weakly hyperbolic equations
• Well-posedness of the Cauchy problem for weakly hyperbolic equations

メディア報道

産業財産権

所属学協会

• 日本数学会
• Mathematical Society of Japan

委員歴

担当経験のある科目

社会貢献活動

学術貢献活動