Takeaki Yamazaki
| Department of Electrical and Electronic Engineering | Professor |
| Course of Electricity， Electronics and Communications | Professor |
Last Updated :2026/04/10
■Researcher basic information
Degree
- 博士（理学）
■Career
Research History
- Apr. 2016 - Present
Toyo University, Faculty of Science and Engineering, 教授 - Apr. 2011 - Mar. 2016
Toyo University, Faculty of Science and Engineering - Apr. 2007 - Mar. 2011
- 神奈川大学 工学部 准教授 - 2006 - 2007
Kanagawa University, Faculty of Engineering - 2004 - 2006
Kanagawa University, Faculty of Engineering - 2000 - 2004
Kanagawa University, Faculty of Engineering
■Research activity information
Papers
- On numerical range of generalized Aluthge transforms, and a generalization of the arithmetic-geometric mean inequality
Chafiq Benhida; Takeaki Yamazaki
Journal of Mathematical Analysis and Applications, Apr. 2026, [Reviewed]
Corresponding - Limit of iteration of the induced Aluthge transformations of centered operators
Hiroyuki Osaka; Takeaki Yamazaki
Transactions of the American Mathematical Society, 21 Jul. 2025, [Reviewed]
Corresponding - Stability of AN-operators under functional calculus
Golla Ramesh; Hiroyuki Osaka; Yoichi Udagawa; Takeaki Yamazaki
Analysis Mathematica, Sep. 2023, [Reviewed] - Stability of AN-property for the induced Aluthge transformations
Ramesh Golla; Hiroyuki Osaka; Yoichi Udagawa; Takeaki Yamazaki
Linear Algebra and its Applications, Aug. 2023, [Reviewed]
Corresponding - Furuta type inequalities via operator means and applications to Kadison’s type inequalities
Jagjit Singh Matharu; Takeaki Yamazaki; Chitra Malhotra
Annals of Functional Analysis, Apr. 2022, [Reviewed]
Corresponding - The induced Aluthge transformations
Takeaki Yamazaki
Linear Algebra and its Applications, Nov. 2021, [Reviewed]
Lead, Last, Corresponding - Dynamics Analysis Using Koopman Mode Decomposition of a Microgrid Including Virtual Synchronous Generator-Based Inverters
Yuko Hirase; Yuki Ohara; Naoya Matsuura; Takeaki Yamazaki
Enagies, Jul. 2021, [Reviewed] - Joint numerical radius of spherical Aluthge transforms of tuples of Hilbert space operators
Kais Feki; Takeaki Yamazaki
Mathematical Inequalities and Applications, Apr. 2021, [Reviewed] - The Ando-Hiai inequalities for the solution of the generalized Karcher equation and related results
YAMAZAKI TAKEAKI
Journal of Mathematical Analysis and Applications, Nov. 2019, [Reviewed] - UPPER AND LOWER BOUNDS, AND OPERATOR MONOTONICITY OF AN EXTENSION OF THE PETZ-HASEGAWA FUNCTION
Takayuki Furuta; Masatoshi Ito; Takeaki Yamazaki; Masahiro Yanagida
MATHEMATICAL INEQUALITIES & APPLICATIONS, Jan. 2018, [Reviewed] - Some properties of weighted operator means and characterizations of interpolational means
Yoichi Udagawa; Takeaki Yamazaki; Masahiro Yanagida
LINEAR ALGEBRA AND ITS APPLICATIONS, Mar. 2017, [Reviewed] - Some norm inequalities for matrix means
Rajendra Bhatia; Yongdo Lim; Takeaki Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Jul. 2016, [Reviewed] - Equivalence relations among some inequalities on operator means
Wada, Shuhei; Yamazaki, Takeaki
Nihonkai Mathematical Journal, Jun. 2016, [Reviewed] - Norm inequalities for matrix geometric means of positive definite matrices
Jun Ichi Fujii; Yuki Seo; Takeaki Yamazaki
LINEAR & MULTILINEAR ALGEBRA, Mar. 2016, [Reviewed] - On a family of operator means involving the power difference means
Yoichi Udagawa; Shuhei Wada; Takeaki Yamazaki; Masahiro Yanagida
LINEAR ALGEBRA AND ITS APPLICATIONS, Nov. 2015, [Reviewed] - Some generalized numerical radius inequalities for Hilbert space operators
Mostafa Sattari; Mohammad Sal Moslehian; Takeaki Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Apr. 2015, [Reviewed] - Cartesian decomposition and numerical radius inequalities
Fuad Kittaneh; Mohammad Sal Moslehian; Takeaki Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Apr. 2015, [Reviewed] - A converse of Loewner-Heinz inequality and applications to operator means
Mitsuru Uchiyama; Takeaki Yamazaki
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, May 2014 - On some inequalities for the matrix power and Karcher means
Yongdo Lim; Takeaki Yamazaki
Linear Algebra and Its Applications, 01 Feb. 2013 - An elementary proof of arithmetic-geometric mean inequality of the weighted Riemannian mean of positive definite matrices
Takeaki Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Feb. 2013 - THE RIEMANNIAN MEAN AND MATRIX INEQUALITIES RELATED TO THE ANDO-HIAI INEQUALITY AND CHAOTIC ORDER
Takeaki Yamazaki
OPERATORS AND MATRICES, Sep. 2012 - Geometric properties of positive definite matrices cone with respect to the Thompson metric
Masatoshi Ito; Yuki Seo; Takeaki Yamazaki; Masahiro Yanagida
Linear Algebra and Its Applications, 15 Oct. 2011 - Multi-variable weighted geometric means of positive definite matrices
Hosoo Lee; Yongdo Lim; Takeaki Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Jul. 2011 - Hyponormal operators and two-isometry
山崎 丈明; 神奈川大学工学部数学教室; 長宗雄; 北海道大学理学部数学科; 中路貴彦
Far East J. Math. Sci., 01 Apr. 2011 - On an elementary operator with w-hyponormal operator entries
M. Cho; S. V. Djordjevic; B. P. Duggal; T. Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Dec. 2010 - Characterizations of p-hyponormal and weak hyponormal weighted composition operators
山崎 丈明; 神奈川大学工学部数学教室; 長宗雄
Acta Sci. Math. (Szeged), 01 Aug. 2010 - Weighted geometric mean of n-operators with n-parameters
Changdo Jung; Hosoo Lee; Yongdo Lim; Takeaki Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Mar. 2010 - On a new construction of geometric mean of n-operators
Changdo Jung; Hosoo Lee; Takeaki Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Oct. 2009 - On the operator equation AB=zBA
山崎 丈明; 神奈川大学工学部数学教室; 長宗雄; Department of Mathematics Education; Sang Myung; University Korea Jun-Ik Lee
Sci. Math. Jpn., 01 Apr. 2009 - On the operator equation AB=zBA
Scientiae Mathematicae Japonicae, 2009 - ON A GEOMETRIC PROPERTY OF POSITIVE DEFINITE MATRICES CONE
Masatoshi Ito; Yuki Seo; Takeaki Yamazaki; Masahiro Yanagida
BANACH JOURNAL OF MATHEMATICAL ANALYSIS, 2009 - A remark on support of the principal function for class a operators
Muneo Cho; Mariko Giga; Tadasi Huruya; Takeaki Yamazaki
INTEGRAL EQUATIONS AND OPERATOR THEORY, Mar. 2007 - On upper and lower bounds of the numerical radius and an equality condition
Takeaki Yamazaki
STUDIA MATHEMATICA, 2007 - On upper and lower bounds for the numerical radius and an equality condition
山崎 丈明
Studia Math., 01 Jan. 2007 - An extension of Kantorovich inequality to n-operators via the geometric mean by Ando-Li-Mathias
Takeaki Yamazaki
Linear Algebra and Its Applications, 15 Jul. 2006 - An extension of Kantorovich inequality to n-operators via the geometric mean by Ando-Li-Mathias
Takeaki Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Jul. 2006 - An operator transform from class A to the class of hyponormal operators and its application
Muneo Cho; Takeaki Yamazaki
Integral Equations and Operator Theory, Dec. 2005 - An operator transform from class A to the class of hyponormal operators and its application
M Cho; T Yamazaki
INTEGRAL EQUATIONS AND OPERATOR THEORY, Dec. 2005 - On comparisons of norms and the numerical ranges of an operator with its generalized Aluthge transformation
山崎 丈明; 所属なし; S.M. Patel
Scientiae Mathematicae Japonicae, 01 Apr. 2005 - On conparisons of norms and the numerical ranges of an operator with its generalized Aluthge transformation
Scientiae Mathematicae Japonicae, 2005 - On comparisons of norms and the numerical ranges of an operator with its generalized Aluthge transformation
Sci. Math. Jpn., Vol. 62 (2005), 2005 - On numerical range and norm of the generalized Aluthge transform
日本数学会２００５年度年会, 日本大学, 2005 - On the polar decomposition of the product of two operators and its applications
山崎 丈明; 前橋工科大学工学部総合デザイン工学科; 伊藤 公智; 東京理科大学理学部数理情報科学科; 柳田 昌宏
Integral Equations and Operator Theory, 01 Apr. 2004 - On the polar decomposition of the Aluthge transformation and related results
山崎 丈明; 前橋工科大学工学部総合デザイン工学科; 伊藤 公智; 東京理科大学理学部数理情報科学科; 柳田 昌宏
Journal of Operator Theory, 01 Apr. 2004 - Mosaic and principal functions of log-hyponormal operators
山崎 丈明; 神奈川大学理学部数理; 物理学科; 長; 宗雄; 新潟大学教育学部教育学科; 古谷 正
Integral Equations and Operator Theory, 01 Apr. 2004 - Mosaic and principal functions of log-hyponormal operators
M Cho; T Huruya; T Yamazaki
INTEGRAL EQUATIONS AND OPERATOR THEORY, Mar. 2004 - On single-valued extension property and Bishop's one of class A operators
日本数学会２００４年度年会,筑波大学,２００４年３月２９日, 2004 - On the polar decomposition of the product of two operators and its applications
Integral Equations Operator Theory, vol. 49, 2004 - On the polar decomposition of the Aluthge transformation and related results
J. Operator Theory, Vol. 51, 2004 - Weakly chaotic order and its application to class A operators
KOTAC 2004 Operator theory and its applications, Seoul National University, Korea, 2004 - On the polar decomposition of the product of operators
11th Conference of the international linear algebra society, University of Coimbra, Portugal, 2004 - On some norm inequalities associated with the variance of an operator
日本数学会２００４年度秋季総合分科会, 北海道大学, 2004 - On numerical range and norm of the generalized Aluthge transform
作用素論における作用素不等式の役割, 京都大学数理解析研究所, 2004 - The iterated Aluthge transforms of a 2-by-2 matrix converge
T Ando; T Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Dec. 2003 - On generalized numerical range of the Aluthge transformation
M Ito; H Nakazato; K Okubo; T Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Sep. 2003 - Relations between two operator inequalities and their applications to paranormal operators
山崎 丈明; 東京理科大学理学部数理情報科学科; 柳田 昌宏
Acta Scientiarum Mathematicarum (Szeged), 01 Apr. 2003 - The iterated Aluthge transforms of a $2$--by--$2$ matrix converge
山崎 丈明; 北海道大学名誉教授; 安藤 毅
Linear Algebra and Its Applications, 01 Apr. 2003 - Generalizations of results on relations between Furuta type inequalities
山崎 丈明; 前橋工科大学工学部総合デザイン工学科; 伊藤 公智; 東京理科大学理学部数理情報科学科; 柳田 昌宏
Acta Scientiarum Mathematicarum (Szeged), 01 Apr. 2003 - On generalized numerical range of the Aluthge transformation
作用素の構造と関連する最近の話題、京都大学数理解析研究所, 2003 - The polar decomposition of the product of operators and its applications to binormal and centered operators (Structure of operators and related current topics)
Yanagida Masahiro; Ito Masatoshi; Yamazaki Takeaki
RIMS Kokyuroku, 2003 - On generalized numerical range of the Aluthge transformation
日本数学会2003年度 年会、東京大学, 2003 - Operator inequalities derived from new formula that Specht ratioS(1) can be expressed by generalized Kantorovich constant K(p): S(1)=e^K'(1)
KOTAC 2003 Operator theory and its applications,Chungnam National University,２００３年６月１９日, 2003 - An operator transform from class A to the class of hyponormal operators
日本数学会２００３年度 秋季総合分科会,千葉大学,２００３年９月２４日, 2003 - Relations among operator inequalities following from log Ageq log B
日本数学会２００３年度 秋季総合分科会,千葉大学,２００３年９月２４日, 2003 - Relations among operator orders and operator inequalities
作用素不等式に関わる最近の話題,京都大学数理解析研究所,２００３年１１月１９日, 2003 - An operator transform from class A to the class of hyponormal operators and its application
作用素不等式に関わる最近の話題,京都大学数理解析研究所,２００３年１１月２０日, 2003 - An operator transform from class A to the class of hyponormal operators
第１２回関数空間セミナー,お茶の水女子大学,２００３年１２月２６日, 2003 - On approximate point joint spectrum of p-hyponormal and log-hyponormal operators
Comment. Math. Prace Mat., 43(2003), 2003 - Relations between two operator inequalities and their applications to paranormal operators
Acta Sci. Math. (Szeged), 69(2003), 2003 - Generalizations of results on relations between Furuta-type inequalities
Acta Math Sci. (Szeged), 69(2003), 2003 - Relations between two inequalities (B(r/2)A(p)B(r/2))(r/p+r)>= B-r and A(p)>=(A(p/2)B(r)A(p/2))(p/p+r) and their applications
N Ito; T Yamazaki
INTEGRAL EQUATIONS AND OPERATOR THEORY, Nov. 2002 - On numerical range of the Aluthge transformations
山崎 丈明
Linear Algebra and its Applications, Jun. 2002 - On numerical range of the Aluthge transformation
山崎 丈明
Linear Algebra and its Applications, 01 Apr. 2002 - On the polar decompositions of Aluthge transformation and powers of operators
日本数学会2002年度年会、明治大学, 2002 - Generalizations of results on relations between Furuta-type inequalities
日本数学会2002年度年会、明治大学, 2002 - Properties of Aluthge transformation on operator norms
The 6th workshop on numerical range and numerical radius, Auburn University, 2002 - Relations between two Furuta-type inequalities
The 10th ILAS conference, Auburn University, 2002 - On binormality of the Aluthge transformation
日本数学会2002年度 秋季総合分科会、島根大学, 2002 - On a relation between the polar decomposition and commutativity of operators
日本数学会2002年度 秋季総合分科会、島根大学, 2002 - Characterizations of log Ageq log B and normaloid operators via Heinz inequality
Integral Equations Operator Theory, 43(2002), 2002 - An expression of spectral radius via Aluthge transformation
Proc. Amer. Math. Soc., 130(2002), 2002 - On numerical range of the Aluthge transformation
T Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Jan. 2002 - An expression of spectral radius via aluthge transformation
Takeaki Yamazaki
Proceedings of the American Mathematical Society, 2002 - Parallelism between Aluthge transformation and powers of operators
山崎 丈明
Acta Scientiarum Mathematicarum (Szeged), 01 Apr. 2001 - Order prederving operator inequalities associated with Kantorovich inequality and Specht's theorem
第35回関数解析研究会報告集, 2001 - Several properties of Aluthge transformation
北海道大学数学講究録、66, 2001 - Several properties of Aluthge transformation
日本数学会2001年度春季総合分科会、慶応義塾大学, 2001 - Order preserving operator inequalities and Aluthge transformation
KOTAC 2001 Operator theory and its applications, Cheju National University, 2001 - On numerical range of the Aluthge transformation
日本数学会2001年度秋季総合分科会、九州大学, 2001 - Relations between two operator inequalities and their applications to paranormal operators
日本数学会2001年度秋季総合分科会、九州大学, 2001 - Relations between two inequalities (B^fracr2A^pB^fracr2)^fracrp+r ge B^r and A^p ge (A^fracp2B^rA^fracp2)^fracpp+r and their applications
日本数学会2001年度秋季総合分科会、九州大学, 2001 - Relations between two operator inequalities and their applications to paranormal operators
作用素および作用素不等式の最近の話題、京都大学数理解析研究所, 2001 - On numerical range and polar decomposition of the Aluthge transformation
作用素および作用素不等式の最近の話題、京都大学数理解析研究所, 2001 - Relations between two inequalities (B^fracr2A^pB^fracr2)^fracrp+r ge B^r and A^p ge (A^fracp2B^rA^fracp2)^fracpp+r and their applications
作用素および作用素不等式の最近の話題、京都大学数理解析研究所, 2001 - parallelism between Aluthge transformation and powers of operators
Acta Sci. Math. (Szeged),67(2001), 2001 - Several properties on Aluthge transformation (Development of Operator Theory and Problems)
Yamazaki Takeaki
RIMS Kokyuroku, 2001 - On powers of class A(k) operators including p-hyponormal and log-hyponormal operators
山崎 丈明
Mathematical Inequalities and Applications, 01 Apr. 2000 - A further generalization of paranormal operators
山崎 丈明; 東京理科大学理学部数理情報科学科; 柳田 昌宏
Scientiae Mathematicae, 01 Apr. 2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
山崎 丈明; 東京理科大学大学院理学研究科; 橋本 雅史
Scientiae Mathematicae, 01 Apr. 2000 - An extension of Specht's theorem via Kantorovich inequality and related results
YAMAZAKI T.
Math. Inequal. Appl., 01 Apr. 2000 - Further characterizations of chaotic order via Specht's ratio
山崎 丈明
Mathematical Inequalities and Applications, 01 Apr. 2000 - A characterization of log-hyponormal operators via p-paranormality
山崎 丈明; 東京理科大学理学部数理情報科学科; 柳田 昌宏
Scientiae Mathematicae, 01 Apr. 2000 - Characterizations of chaoric order associated with Kantorovich inequality
Proceedings of KOTAC 2000、3, 2000 - a characterization of log-hyponormal operators via p-paranormality
Scientiae Mathematicae vol.3, 2000 - An extension of Specht's theorem via Kantorovich inequality and related results
Mathematical Inequalities and Applications vol.3, 2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
Scientiae Mathematicae.Vol.3, 2000 - Further extension of characterizations of chaotic order associated with Kantorovich type inequalities
数理解析研究所講究録、1144, 2000 - Extensions of paranormal operators and their properties
数理解析研究所講究録、1144, 2000 - A further generalization of paranormal operators
Scientiae Mathematicae vol.3, 2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
北海道大学数学講究録,62, 2000 - Priperties on several classis including log-hyponormal operators
北海道大学数学講究録,62, 2000 - On powers of p-hyponormal and log-hyponormal operators
北海道大学数学講究録,62, 2000 - Order prederving operator inequalities associated with Kantorovich inequality and Specht's ratio
Proceedings of KOTAC 2000、3, 2000 - Order prederving operator inequalities and related results
「作用素論・作用素環論」研究集会報告集, 2000 - On powers of class A(k) operators including p-hyponormal and log-hyponormal operators
数理解析研究所講究録,1144, 2000 - Recent applications of order preserving operator inequalities
神楽坂解析セミナー、東京理科大学, 2000 - On powers of class A(k) operators including p-hyponormal and log-hyponormal operators
作用素の不等式とその周辺、京都大学理数解析研究所, 2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
作用素の不等式とその周辺、京都大学理数解析研究所, 2000 - Extensions of paranormal operators and their properties
作用素の不等式とその周辺、京都大学理数解析研究所, 2000 - On powers of class A(k) operators including p-hyponormal and log-hyponormal operators,
日本数学会2000年度秋季総合分科会、早稲田大学, 2000 - Extensions of paranormal operators and their properties,
日本数学会2000年度秋季総合分科会、早稲田大学, 2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities (Operator Inequalities and Related Area)
Hashimoto Masashi; Yanagida Masahiro; Yamazaki Takeaki
RIMS Kokyuroku, 2000 - Further characterizations of chaotic order via Specht's ratio
Math.Inequal.Appl., 2000 - Order preserving operator function via Furuta inequality "A >= B >= 0 ensures (A(r/2) A(p) A(r/2)) (1+r/p+r) >= (A(r/2)B(p)A(r/2)) (1+r/p+r) for p >= 1 and r >= 0"
T Furuta; T Yamazaki; M Yanagida
OPERATOR THEORY AND INTERPOLATION, 2000 - Order prederving operator inequalities associated with Kantorovich inequality and Specht's ratio
KOTAC International Conference 2000, Operator Theory and Its Applications,成均館大学, 2000 - Order prederving operator inequalities associated with Kantorovich inequality and Specht's ratio
第35回関数解析研究会、国立オリンピック記念青少年総合センター, 2000 - Order prederving operator inequalities associated with Kantorovich inequality and Specht's ratio
日本数学会2000年度秋季総合分科会、京都大学, 2000 - Several properties on Aluthge transformation
作用素論の発展と諸問題、京都大学数理解析研究所, 2000 - Order prederving operator inequalities and related results
「作用素論・作用素環論」研究修集会、神奈川大学, 2000 - Several properties of Aluthge transformation
第9回関数空間セミナー、お茶の水女子大学, 2000 - On powers of class A( ) operators including p-hyponormal and log-hyponormal Operators
Mathematical Inequalities and Applications vol.3, 2000 - Characterizations of chaotic order associated with Kantorovich inequality
山崎 丈明; 東京理科大学理学部数理情報科学科; 柳田 昌宏
Scientiae Mathematicae, 01 Apr. 1999 - Extensions of the results on p-hyponormal and log-hyponormal operators by Aluthge and Wang
YAMAZAKI T.
SUT J. Math., 01 Apr. 1999 - Simplified proof of Tanahashi's result on the best possibility of generalized Furuta inequality
山崎 丈明
Mathematical Inequalities and Applications, 01 Apr. 1999 - Simplified proof of characterization of chaotic order via Specht's ratio
Scientiae Mathematicae vol.2, 1999 - Extensions of teh results on p-hyponormal and log-hyponormal operators by Aluthge and Wang
SUT Journal of Mathematics vol.35, 1999 - Simplified proof of Tanahashi's result on the best possibility of generalized Furuta inequality
Mathematical Inequalities and Applications vol.2, 1999 - Characterizations of chaotic Order assosciated with Kantorovich inequality
Scientiae Mathematicae vol.2, 1999 - A subclass of paranormal including class of log-hyponormal and several related classes (Operator Inequalities and related topics)
Yamazaki Takeaki; Ito Masatoshi; Furuta Takayuki
RIMS Kokyuroku, 1999 - Characterizations of chaotic order associated with Kantorovich inequality
北海道大学数学講究録、57, 1999 - Characterizations of chaoric order associated with Kantorovich inequality
北海道大学数学講究録、57, 1999 - A subclass of paranormal including class of log-hyponormal and several related classes
北海道大学数学講究録、57, 1999 - Characterizations of chaoric order associated with Kantorovich inequality
数理解析研究講究録、1080, 1999 - A characterization of chaotic order associated with Kantorovich inequality ・
日本数学会1999年度春季総合分科会、学習院大学, 1999 - A simplified proof of Tanahashi's result on the best possibility of generalized Furuta inequality
日本数学会1999年度春季総合分科会、学習院大学, 1999 - Order preserving operator inequalities and their recent applications
神楽坂解析セミナー、東京理科大学, 1999 - Extensions of the results on p-hyponormal and log-hyponormal operators by Aluthge and Wang
日本数学会1999年度秋季総合分科会、広島大学, 1999 - Properties on several classes including log-hyponormal operators
第８回関数空間セミナー、お茶の水女子大学, 1999 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
第８回関数空間セミナー、お茶の水女子大学, 1999 - On powers of p-hyponormal and log-hyponormal operators
第８回関数空間セミナー、お茶の水女子大学, 1999 - Order preserving operator inequalities via Furuta inequality
山崎 丈明; 弘前大学名誉教授; 古田 孝之; 東京理科大学理学部数理情報科学科; 柳田 昌宏
Mathematica Japonica, 01 Apr. 1998 - An extension of order preserving operator inequalities
数理解析研究講究録、1027, 1998 - Generalized operator functions implying order preserving operator inequalities
数理解析研究所講究録、1027, 1998 - Order preserving operator function via the inequality“A>B>0 ensures(A^fracr2A^pA^fracr2)displaystyle ^frac1+rp+r> (A^fracr2B^pA^fracr2)displaystyle ^frac1+rp+r for p>1 and r>0”
数理解析研究所講究録、1039, 1998 - Equivalence relations among Furuta-type inequalities with negative pwoers
Scientiae Mathematicae vol.1, 1998 - A subclass of paranormal operators including class of log-hyponormal and several related classes
Scientiae Mathematicae vol.1, 1998 - On order preserving inequalities with negative powers and a related conjecture
第３３回函数解析研究会ジュニア函数解析シンポジウム1998講究録, 1998 - Order preserving operator inequalities via Furuta inequality
Mathematica Japonica vol.48, 1998 - Operator functions implying generalized Furuta inezuality
Mathematical Inequalities and Applications vol.1, 1998 - A subclass of paranormal including class of log-hyponormal
第３３回函数解析研究会ジュニア函数解析シンポジウム1998講究録, 1998 - On a conjecture related to Furuta-type inequalities with negative powers
Nihonkai Mathematical Journal vol.9, 1998 - Generalized operator functions implying order preserving operator inequalities
北海道大学数学講究録、52, 1998 - Order preserving operator inequalities via Furuta inequality
第３２回関数解析研究会報告集, 1998 - Order preserving inequality associated with H"older-McCarthy and Kantorovich inequalities
第３３回函数解析研究会ジュニア函数解析シンポジウム1998講究録, 1998 - Equivalence relations among order preserving operator inequalities and a related open problem
北海道大学数学講究録、52, 1998 - A conjecture on order preserving operator inequalities and related equivalence relations
日本数学会1998年度春季総合分科会、名城大学, 1998 - Generalized operator functions implying order preserving inequalities
日本数学会1998年度春季総合分科会、名城大学, 1998 - On order preserving inequalities with negative powers and a related conjecture
第３３回函数解析研究会ジュニア函数解析シンポジウム１９９８、東京理科大学, 1998 - A subclass of paranormal including class of log-hyponormal
第３３回函数解析研究会ジュニア函数解析シンポジウム１９９８、東京理科大学, 1998 - Order preserving inequality associated with H"older-McCarthy and Kantorovich inequalities
第３３回函数解析研究会ジュニア函数解析シンポジウム１９９８、東京理科大学, 1998 - A subclass of paranomal including class of log-hyponormal and severalrelated classes
日本数学会1998年度秋季総合分科会、大阪大学, 1998 - A characterization of chaotic order associated with Kantorovich inequality
日本数学会1998年度秋季総合分科会、大阪大学, 1998 - Characterizations of chaotic order associated with Kantorovich inequality
作用素の不等式とその周辺、京都大学数理解析研究所, 1998 - A subclass of paranormal including class of log-hyponormal and several related classes
作用素の不等式とその周辺、京都大学数理解析研究所, 1998 - Characterizations of chaotic order associated with Kantorovich inequality
第７回関数空間セミナー、北海道大学, 1998 - A subclass of paranormal including class of log-hyponormal and several related class
第７回関数空間セミナー、北海道大学, 1998 - Order preserving operator function via the inequality“A>B>0 ensures(A^fracr2A^pA^fracr2)displaystyle^ frac1+rp+r> (A^fracr2B^pA^fracr2)displaystyle ^frac1+rp+r for p>1 and r>0”
応用函数解析の研究、京都大学数理解析研究所, 1997 - Order preserving operator inequalities via Furuta inequality
第３２回関数解析研究会、いこいの村涸沼, 1997 - Operator functions implying order preserving inequalities,
日本数学会1997年度秋季総合分科会、東京大学, 1997 - An order preserving operator inequality
日本数学会1997年度秋季総合分科会、東京大学, 1997 - Generalized operator functions implying order preserving operator inequalities
作用素論における不等式とその周辺、京都大学数理解析研究所, 1997 - An extension of order preserving operator inequalities
作用素論における不等式とその周辺、京都大学数理解析研究所, 1997 - Equivalence relations among order preserving operator inequalities and a related open problem
第６回関数空間セミナー、北海道大学, 1997 - Generalized operator functions implying order preserving operator inequalities
第６回関数空間セミナー、北海道大学, 1997
Misc.
- SOME NORM INEQUALITIES FOR MATRIX MEANS (作用素論に基づく量子情報理論の幾何学的構造に関する研究と関連する話題)
YAMAZAKI TAKEAKI
数理解析研究所講究録, Jun. 2017 - RESEARCH OF WEIGHTED OPERATOR MEANS FROM TWO POINTS OF VIEW (Research on structure of operators by order and geometry with related topics)
宇田川 陽一; 山崎 丈明; 柳田 昌宏
数理解析研究所講究録, Apr. 2016 - On a family of operator means involving the power difference means (Theory of operator means and related topics)
Udagawa Yoichi; Wada Shuhei; Yamazaki Takeaki; Yanagida Masahiro
RIMS Kokyuroku, Apr. 2015 - EQUIVALENCE RELATIONS AMONG SOME INEQUALITIES ON OPERATOR MEANS (Theory of operator means and related topics)
WADA SHUHEI; YAMAZAKI TAKEAKI
RIMS Kokyuroku, Apr. 2015 - CONVERSES OF LOEWNER-HEINZ INEQUALITY VIA OPERATOR MEANS (Operator monotone functions and related topics)
YAMAZAKI TAKEAKI; UCHIYAMA MITSURU
RIMS Kokyuroku, May 2014 - A brief introduction of the Karcher mean (Research on structures of operators via methods in geometry and probability theory)
Yamazaki Takeaki
RIMS Kokyuroku, Jun. 2013 - Riemannian mean and matrix inequalities related to chaotic order and Ando-Hiai inequality (Noncommutative Structure in Operator Theory and its Application)
Yamazaki Takeaki
RIMS Kokyuroku, Apr. 2011 - On a new construction of geometric mean of $n$-operators (Prospects of non-commutative analysis in operator theory)
Yamazaki Takeaki; Jung Changdo; Lee Hosoo
RIMS Kokyuroku, Apr. 2010 - On the operator equation AB=zBA
Scientiae Mathematicae Japonicae, 2009 - $p$-Hyponormality of weighted composition operators (Inequalities on Linear Operators and its Applications)
Cho Muneo; Yamazaki Takeaki
RIMS Kokyuroku, Apr. 2008 - A remark on support of the principal function for class a operators
Muneo Cho; Mariko Giga; Tadasi Huruya; Takeaki Yamazaki
INTEGRAL EQUATIONS AND OPERATOR THEORY, Mar. 2007 - Upper and lower bounds of numerical radius and an equality condition(Recent Developments in Theory of Operators and Its Applications)
Yamazaki Takeaki
RIMS Kokyuroku, Feb. 2007 - On upper and lower bounds of the numerical radius and an equality condition
Takeaki Yamazaki
Studia Mathematica, 2007 - An extension of Kantorovich inequality to n-operators via the geometric mean by Ando-Li-Mathias
Linear Algebra and its Applications, 2006 - An extension of Kantorovich inequality to $\mathit{n}$-operators(Recent Developments in Linear Operator Theory and its Applications)
Yamazaki Takeaki
RIMS Kokyuroku, Dec. 2005 - An operator transform from class A to the class of hyponormal operators and its application
Muneo Cho; Takeaki Yamazaki
Integral Equations and Operator Theory, Dec. 2005 - On conparisons of norms and the numerical ranges of an operator with its generalized Aluthge transformation
Scientiae Mathematicae Japonicae, 2005 - On numerical range and norm of the generalized Aluthge transform
2005 - On Aluthge transform of operators
YAMAZAKI Takeaki
Science reports of Research Institute for Engineering Kanagawa University., Nov. 2004 - On single-valued extension property and Bishop's one of class A operators
2004 - On the polar decomposition of the product of two operators and its applications
Integral Equations Operator Theory, vol. 49, 2004 - On the polar decomposition of the Aluthge transformation and related results
J. Operator Theory, Vol. 51, 2004 - Mosaic and principal functions of log-hyponormal operators
2004 - Weakly chaotic order and its application to class A operators
2004 - On the polar decomposition of the product of operators
2004 - On some norm inequalities associated with the variance of an operator
2004 - On numerical range and norm of the generalized Aluthge transform
2004 - The iterated Aluthge transforms of a 2-by-2 matrix converge
T Ando; T Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Dec. 2003 - On generalized numerical range of the Aluthge transformation
M Ito; H Nakazato; K Okubo; T Yamazaki
LINEAR ALGEBRA AND ITS APPLICATIONS, Sep. 2003 - The polar decomposition of the operators and its applications to binormal and centered operators
2003 - Operator inequalities derived from new formula that Specht ratioS(1) can be expressed by generalized Kantorovich constant K(p): S(1)=e^K'(1)
2003 - Relations among operator inequalities following from log Ageq log B
2003 - Relations among operator orders and operator inequalities
2003 - An operator transform from class A to the class of hyponormal operators and its application
2003 - An operator transform from class A to the class of hyponormal operators
2003 - On approximate point joint spectrum of p-hyponormal and log-hyponormal operators
Comment. Math. Prace Mat., 43(2003), 2003 - Relations between two operator inequalities and their applications to paranormal operators
Acta Sci. Math. (Szeged), 69(2003), 2003 - Generalizations of results on relations between Furuta-type inequalities
Acta Math Sci. (Szeged), 69(2003), 2003 - On generalized numerical range of the Aluthge transformation
Linear Algebra Appl., 370(2003), 2003 - Relations between two inequalities (B(r/2)A(p)B(r/2))(r/p+r)>= B-r and A(p)>=(A(p/2)B(r)A(p/2))(p/p+r) and their applications
N Ito; T Yamazaki
INTEGRAL EQUATIONS AND OPERATOR THEORY, Nov. 2002 - Characterizations of log A >= log B and normaloid operators via Heinz inequality
T Yamazaki
INTEGRAL EQUATIONS AND OPERATOR THEORY, Jun. 2002 - Relations between two inequalities $(B^{\frac{r},{2 } }A^pB^{\frac{r},{2 } })^{\frac{r},{p+r } }\ge B^r$ and $A^p\ge (A^{\frac{p},{2 } }B^rA^{\frac{p},{2 } })^{\frac{p},{p+r } }$ and their applications (Current topics on operator theory and operator inequalities)
Ito Masatoshi; Yamazaki Takeaki
RIMS Kokyuroku, Apr. 2002 - On the polar decompositions of Aluthge transformation and powers of operators
2002 - Generalizations of results on relations between Furuta-type inequalities
2002 - Properties of Aluthge transformation on operator norms
The 6th workshop on numerical range and numerical radius, Auburn University, 2002 - Relations between two Furuta-type inequalities
The 10th ILAS conference, Auburn University, 2002 - On binormality of the Aluthge transformation
2002 - On a relation between the polar decomposition and commutativity of operators
2002 - An expression of spectral radius via Aluthge transformation
Proc. Amer. Math. Soc., 130(2002), 2002 - On numerical range of the Aluthge transformation
Linear Algebra Appl.,341(2002), 2002 - Order prederving operator inequalities associated with Kantorovich inequality and Specht's theorem
2001 - Several properties of Aluthge transformation
2001 - Several properties of Aluthge transformation
2001 - Order preserving operator inequalities and Aluthge transformation
KOTAC 2001 Operator theory and its applications, Cheju National University, 2001 - On numerical range of the Aluthge transformation
2001 - Relations between two operator inequalities and their applications to paranormal operators
2001 - On numerical range and polar decomposition of the Aluthge transformation
2001 - Relations between two inequalities (B^fracr2A^pB^fracr2)^fracrp+r ge B^r and A^p ge (A^fracp2B^rA^fracp2)^fracpp+r and their applications
2001 - parallelism between Aluthge transformation and powers of operators
Acta Sci. Math. (Szeged),67(2001), 2001 - Several properties on Aluthge transformation
2001 - Further characterizations of chaotic order via Specht's ratio
T Yamazaki
MATHEMATICAL INEQUALITIES & APPLICATIONS, Apr. 2000 - Characterizations of chaoric order associated with Kantorovich inequality
2000 - a characterization of log-hyponormal operators via p-paranormality
Scientiae Mathematicae vol.3, 2000 - An extension of Specht's theorem via Kantorovich inequality and related results
T Yamazaki
MATHEMATICAL INEQUALITIES & APPLICATIONS, Jan. 2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
Scientiae Mathematicae.Vol.3, 2000 - Further extension of characterizations of chaotic order associated with Kantorovich type inequalities
2000 - Extensions of paranormal operators and their properties
2000 - A further generalization of paranormal operators
Scientiae Mathematicae vol.3, 2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
2000 - Priperties on several classis including log-hyponormal operators
2000 - On powers of p-hyponormal and log-hyponormal operators
2000 - Order prederving operator inequalities associated with Kantorovich inequality and Specht's ratio
2000 - Order prederving operator inequalities and related results
2000 - On powers of class A(k) operators including p-hyponormal and log-hyponormal operators
2000 - Recent applications of order preserving operator inequalities
2000 - On powers of class A(k) operators including p-hyponormal and log-hyponormal operators
2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
2000 - Extensions of paranormal operators and their properties
2000 - On powers of class A(k) operators including p-hyponormal and log-hyponormal operators,
2000 - Extensions of paranormal operators and their properties,
2000 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities,
2000 - Order prederving operator inequalities associated with Kantorovich inequality and Specht's ratio
2000 - Several properties on Aluthge transformation
2000 - Order prederving operator inequalities and related results
2000 - Several properties of Aluthge transformation
2000 - On powers of class A( ) operators including p-hyponormal and log-hyponormal Operators
Mathematical Inequalities and Applications vol.3, 2000 - Simplified proof of characterization of chaotic order via Specht's ratio
Scientiae Mathematicae vol.2, 1999 - Extensions of teh results on p-hyponormal and log-hyponormal operators by Aluthge and Wang
SUT Journal of Mathematics vol.35, 1999 - Simplified proof of Tanahashi's result on the best possibility of generalized Furuta inequality
Mathematical Inequalities and Applications vol.2, 1999 - Characterizations of chaotic Order assosciated with Kantorovich inequality
Scientiae Mathematicae vol.2, 1999 - A subclass of paranormal including class of log-hyponormal and several related classes
1999 - Characterizations of chaotic order associated with Kantorovich inequality
1999 - Characterizations of chaoric order associated with Kantorovich inequality
1999 - A subclass of paranormal including class of log-hyponormal and several related classes
1999 - Characterizations of chaoric order associated with Kantorovich inequality
1999 - Simplified proof of Tanahashi's result on the best possibility of generalized Furuta inequality
Takeaki Yamazaki
Mathematical Inequalities and Applications, 1999 - Order preserving operator inequalities and their recent applications
1999 - Extensions of the results on p-hyponormal and log-hyponormal operators by Aluthge and Wang
1999 - Properties on several classes including log-hyponormal operators
1999 - Further extensions of characterizations of chaotic order associated with Kantorovich type inequalities
1999 - On powers of p-hyponormal and log-hyponormal operators
1999 - Order preserving operator function via the inequality (Applied Functional Analysis)
Yanagida Masahiro; Yamazaki Takeaki; Furuta Takayuki
RIMS Kokyuroku, Apr. 1998 - An extension of order preserving operator inequalities
1998 - Generalized operator functions implying order preserving operator inequalities
1998 - Equivalence relations among Furuta-type inequalities with negative pwoers
Scientiae Mathematicae vol.1, 1998 - A subclass of paranormal operators including class of log-hyponormal and several related classes
Scientiae Mathematicae vol.1, 1998 - On order preserving inequalities with negative powers and a related conjecture
1998 - Order preserving operator inequalities via Furuta inequality
Mathematica Japonica vol.48, 1998 - Operator functions implying generalized Furuta inezuality
Mathematical Inequalities and Applications vol.1, 1998 - A subclass of paranormal including class of log-hyponormal
1998 - On a conjecture related to Furuta-type inequalities with negative powers
Nihonkai Mathematical Journal vol.9, 1998 - Generalized operator functions implying order preserving operator inequalities
1998 - Order preserving operator inequalities via Furuta inequality
1998 - Order preserving inequality associated with H"older-McCarthy and Kantorovich inequalities
1998 - Equivalence relations among order preserving operator inequalities and a related open problem
1998 - A conjecture on order preserving operator inequalities and related equivalence relations
1998 - Generalized operator functions implying order preserving inequalities
1998 - On order preserving inequalities with negative powers and a related conjecture
1998 - A subclass of paranormal including class of log-hyponormal
1998 - Order preserving inequality associated with H"older-McCarthy and Kantorovich inequalities
1998 - A subclass of paranomal including class of log-hyponormal and severalrelated classes
1998 - A characterization of chaotic order associated with Kantorovich inequality
1998 - A subclass of paranormal including class of log-hyponormal and several related classes
1998 - Characterizations of chaotic order associated with Kantorovich inequality
1998 - A subclass of paranormal including class of log-hyponormal and several related class
1998 - Order preserving operator inequalities via Furuta inequality
1997 - Operator functions implying order preserving inequalities,
1997 - An order preserving operator inequality
1997 - An extension of order preserving operator inequalities
1997 - Equivalence relations among order preserving operator inequalities and a related open problem
1997 - Generalized operator functions implying order preserving operator inequalities
1997
Books and Other publications
Presentations
- Limit of iteration of the induced Aluthge transformations of centered operators
TAKEAKi YAYAMAZAKI
Operator Means and Their Applications On Numerical Analysis and Quantum information, 04 Dec. 2025, [Invited] - On numerical range of generalized Aluthge transforms, and a generalization of the arithmetic-geometric mean inequality
山崎丈明
2025年 作用素論・作用素環論研究集会, 02 Nov. 2025, [Invited] - On numerical range of generalized Aluthge transforms
山崎 丈明; Chphiq Benhida
日本数学会秋季総合分科会, 18 Sep. 2025 - Stability of AN-operators under functional calculus
Takeaki Yamazaki
The 26th Conference of the International Linear Algebra Society, 23 Jun. 2025, [Invited] - On numerical range of generalized Aluthge transforms
Takeaki Yamazaki
17th Workshop on Numerical Ranges and Numerical Radii, 20 Jun. 2025, [Invited] - Generalizations of Aluthge transform, numerical ranges and spectral radii
Takeaki Yamazaki
International Conference on Matrix Analysis and Mathematical Modelling, 30 Nov. 2024, [Invited] - Limit of iteration of the induced Aluthge transformations of centered operators
山崎 丈明
2024年 作用素論・作用素環論研究集会, 23 Nov. 2024, [Invited] - Generalizations of Aluthge transform, numerical ranges and spectral radii
Takeaki Yamazaki
2024 International Workshop on Matrix Theory and Numerical Linear Algebra with Applications, 28 Aug. 2024, [Invited] - Generalizations of Aluthge transform, numerical ranges and spectral radii
Takeaki Yamazaki
35th International Workshop on Operator Theory and its Applications, 14 Aug. 2024, [Invited] - Generalizations of Aluthge transform, numerical range and spectral radius
山崎 丈明
International Workshop on Matrix Analysis and Quantum Information Theory, 06 Jun. 2024 - The induced Aluthge sequence of compact operators
大坂博幸; 山崎丈明
日本数学会 2024年度年会, 19 Mar. 2024 - Induced Aluthge sequence of compact operators
Takeaki Yamazaki
2023 China-Korea-Japan International Conference on Matrix Theory with Applications & The 7th International Conference on Matrix Inequalities and Matrix Equations, 03 Dec. 2023, [Invited] - Induced Aluthge sequence of compact operators
山崎 丈明
Recent Progress in Operator Theory and its Applications, 08 Nov. 2023 - Limit of the induced Aluthge transformations
Takeaki Yamazaki
10th International Congress on Industrial and Applied Mathematics, 24 Aug. 2023, [Invited] - Limit of the iteration of induced Aluthge transformations of centered matrices
Takeaki Yamazaki
The 10th International Conference on Matrix Analysis and Applications, 17 Aug. 2023, [Invited] - Limit of iteration of the induced Aluthge transformations of centered operators
Takeaki Yamazaki
International Workshop on Matrix Analysis and Its Applications, 08 Jul. 2023 - Limit of the iteration of induced Aluthge transformations of centered operators
Takeaki Yamazaki
Workshop on Operator Theory, Function Theory and Applications, 23 Jun. 2023 - Limit of iterated induced Aluthge transformations of centered operators
大坂博幸; 山崎丈明
2023 日本数学会 年会, 17 Mar. 2023 - The induced Aluthge transformations
Takeaki Yamazaki
Joint Mathematics Meeting, 07 Jan. 2023, [Invited] - Extensions of the Aluthge transformations
山崎丈明
作用素論・作用素環論研究集会, 11 Dec. 2022, [Invited] - Recent research for the Aluthge transformations
山崎丈明; G. Ramesh; 大坂博幸; 宇田川陽一
Operator means and related topics, 01 Nov. 2022 - Stability of AN-property for the induced Aluthge transformations
宇田川陽一; 大坂博幸; 山崎丈明; GOLA, Ramesh
日本数学会 秋季総合分科会, 15 Sep. 2022 - The induced Aluthge transformation
Takeaki Yamazaki
International Workshop on Matrix Analysis and Its Applications, 04 Jun. 2022, [Invited] - Operator means and operator inequalities
山崎 丈明
日本数学会 秋季総合分科会, 16 Sep. 2021, [Invited] - A generalization of the Aluthge transformation via double operator integrals
山崎 丈明
共同研究「順序を用いた作用素の構造研究と関連する話題」, 24 Oct. 2019 - A generalization of the Aluthge transform and its properties
山崎 丈明
The 22nd International Linear Algebra Society, 08 Jul. 2019, [Invited] - Power monotonicity for a path of operator means
YAMAZAKI TAKEAKI
International conference on Matrix Theory and Applications, 24 May 2019, [Invited] - An extension of the Aluthge transform via operator means
山崎 丈明
作用素平均を利用した作用素の構造解析の研究と関連する話題, 25 Oct. 2018 - Generalized Karcher equation, operator entropy and the Ando-Hiai ineuqlaity
YAMAZAKI TAKEAKI
Mathematical inequalities and Applications Conference 2018, 06 Jul. 2018 - On numerical range of a generalization of the Aluthge transform
山崎 丈明
The 7th International Conference on Matrix Analysis and Applications, 23 Jun. 2018 - On a generalization of the Aluthge transform in the viewpoint of the operator means
山崎 丈明
The 2018 International Workshop on Matrix Inequalities and Matrix Equations, 10 Jun. 2018, [Invited] - The Karcher equation, relative operator entropy and the Ando-Hiai inequality
山崎 丈明
日本数学会 2018 年会, 20 Mar. 2018 - Generalized Karcher equations, operator entropies, and extensions
YAMAZAKI TAKEAKI
2017 Korea-China International Conference on Matrix Theory with Applications, 15 Dec. 2017, [Invited] - The Karcher equation, relative operator entropy and the Ando-Hiai inequality
山崎 丈明
BANACH空間に基づく技法による作用素論の最近の研究と関連する話題, 24 Oct. 2017 - Upper and lower bounds, and operator monotonicity of an extension of Petz-Hasegawa functions
山崎 丈明
日本数学会 秋季総合分科会, 13 Sep. 2017 - Properties of weighted operator means via generalized relative operator entropy
YAMAZAKI TAKEAKI
ILAS 2017, 24 Jul. 2017, [Invited] - Some norm inequality for matrix means
YAMAZAKI TAKEAKI
YT004484, 25 Mar. 2017 - Some norm inequalities for matrix means
YAMAZAKI TAKEAKI
MATRIX THEORY AND RELATED TOPICS, 29 Dec. 2016, [Invited] - Some norm inequalities for matrix means
YAMAZAKI TAKEAKI
作用素論に基づく量子情報理論の幾何学的構造に関する研究と関連する話題, 10 Nov. 2016 - Some recent topics on operator means
YAMAZAKI TAKEAKI
YT004484, 03 Sep. 2016, [Invited] - Characterizations of the interpolational means and an application
YAMAZAKI TAKEAKI
20th ILAS Conference, 13 Jul. 2016, [Invited] - On interpolational means and an application
YAMAZAKI TAKEAKI
2016 International workshop on matrix inequalities and matrix equations, 10 Jun. 2016, [Invited] - Research of weighted operator means from two points of view
YAMAZAKI TAKEAKI
順序と幾何による作用素の構造研究と関連する話題, 10 Nov. 2015 - On properties of weighted operator means due to Palfia and Petz
YAMAZAKI TAKEAKI
作用素論・作用素環論研究集会, 25 Oct. 2015, [Invited] - Some properties of weighted operator means due to Palfia and Petz
UDAGAWA YOICHI; YAMAZAKI TAKEAKI; YANAGIDA MASAHIRO
日本数学会秋季総合分科会, 15 Sep. 2015 - Some properties of weighted operator means due to Palfia and Petz
YAMAZAKI TAKEAKI
Workshop on Quantum Information Theory and Related Topics, 01 Sep. 2015, [Invited] - Some operator inequalities on operator means
YAMAZAKI TAKEAKI
Workshop on function spaces, harmonic analysis and related topics, 27 Apr. 2015 - A family of operator means including the power, power difference and Stolarsky means
宇田川 陽一; 柳田 昌宏; 山崎 丈明; 和田 州平
日本数学会2015年度年会, 22 Mar. 2015 - 作用素平均の族のパラメータに関する積分について
宇田川陽一; 柳田昌宏; 山崎丈明; 和田州平
関数解析学の研究とその応用, 29 Jan. 2015 - 作用素平均の最近の話題について
山崎 丈明
信州関数解析シンポジウム2014, 02 Dec. 2014 - on a family of operator means involving the power difference means
宇田川 陽一; 山崎 丈明; 柳田 昌宏
作用素の平均とその関連, 27 Nov. 2014 - Equivalence relations among some inequalities on operator means
YAMAZAKI TAKEAKI; WADA SHUHEI
作用素の平均とその関連, 27 Nov. 2014 - A converse of Loewner-Heinz inequality and applications to operator means
YAMAZAKI TAKEAKI
19th ILAS Conference, 09 Aug. 2014 - Generalized Ando-Hiai inequality for matrix power mean
YAMAZAKI TAKEAKI
日本数学会 2014年度年回, 18 Mar. 2014 - On geometric mean of n-matrices and related results
YAMAZAKI TAKEAKI
The 7th Seminar on Linear Algebra and its Applications, 26 Feb. 2014, [Invited] - Converses of Loewner-Heinz inequality via operator means
山崎 丈明; 島根大学総合理工学部数理; 情報システム学科; 内山; 充
作用素単調関数と関連する話題について, 08 Nov. 2013 - Operator inequality and operator mean
山崎 丈明; 島根大学総合理工学部; 内山 充
日本数学会 秋季総合分科会, 27 Sep. 2013 - Operator inequality and Operator mean
YAMAZAKI TAKEAKI
Mathematical Society of Japan, 27 Sep. 2013, [Invited] - On some matrix inequalities involving matrix geometric mean of several matrices
山崎 丈明
International Conference of Linea Algebra and Applications, 07 Jun. 2013 - Karcher mean と matrix power mean -- これまでの発展と今後の展望 --
山崎 丈明
作用素論・作用素環論研究集会, 24 Nov. 2012 - A brief introduction of the Karcher mean
山崎 丈明
幾何学及び確率論的手法による作用素の構造解析の研究, 05 Nov. 2012 - On some matrix inequalities for the matrix power and Karcher means
山崎 丈明; 理学部数学科; Yongdo LIM
日本数学会, 20 Sep. 2012 - Matrix inequalities which are involved with power means
山崎 丈明
2012 NIMS Hot Topics Workshop on Positive Matrices and Operators: Recent Developments and Advances, 26 Jun. 2012 - On some properties of Riemannian mean
山崎 丈明
作用素論・作用素環論研究集会, 05 Nov. 2011 - Riemannian mean and matrix inequalities
山崎 丈明
17th Conference of the International Linear Algebra Society, 22 Aug. 2011 - Geometric properties of positive definite matrices cone with respect to the Thompson metric
山崎 丈明; 前橋工科大学工学部デザイン工学科; 伊藤公智; 芝浦工業大学工学部; 瀬尾祐貴; 東京理科大学理学部数理情報科学科; 柳田昌宏
日本数学会, 22 Mar. 2011 - Properties of Riemannian mean related to Ando-Hiai inequality
山崎 丈明
日本数学会, 22 Mar. 2011 - On some properties of Riemannian mean
山崎 丈明
作用素論・作用素環論研究集会, 15 Nov. 2010 - Riemannian mean and matrix inequalities related to chaotic order and Ando-Hiai inequality
山崎 丈明
作用素論における非可換構造の研究とその応用, 28 Oct. 2010 - On properties of geometric mean via Riemannian metric
山崎 丈明
日本数学会, 23 Sep. 2010 - On geometric means of n-operators
山崎 丈明
第49回実関数論・函数解析学合同シンポジウム, 02 Aug. 2010 - On properties of geometric mean of n-operators via Riemannian metric
山崎 丈明
16th Conference of the International Linear Algebra Society, 22 Jun. 2010 - A generalization of geometric mean of n-operators by Ando-Li-Mathias
山崎 丈明; 韓; 理学部数学科; Hosoo Lee; 理学部数学科; Yongdo Lim
日本数学会, 25 Mar. 2010 - On geometric mean of n-operators and its generalization
山崎 丈明
作用素論・作用素環論研究集会, 18 Nov. 2009 - On a new construction of geometric mean of n-operators
山崎 丈明
作用素論への幾何学の応用, 30 Oct. 2009 - A new construction of geometric mean of n-operators
山崎 丈明
IWOTA 2009, 21 Sep. 2009 - On a geometric property of positive definite matrices cone
山崎 丈明; 前橋工科大学工学部デザイン工学科; 伊藤公智; 芝浦工業大学工学部; 瀬尾祐貴; 東京理科大学理学部数理情報科学科; 柳田昌宏
日本数学会, 28 Mar. 2009
Research Projects
- ヒルベルト空間上の有界線形作用素における不等式とその応用の研究
2013 - 2013 - Generalizations to Operator Theory of Shannon's inequality of Information Theory and its application
Grant-in-Aid for Scientific Research (C)
Kanagawa University
2005 - 2007 - Research of operator inequality and spectrum using computer
Grant-in-Aid for Scientific Research (C)
Kanagawa University
2002 - 2004
