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  1. 81
    Some Results on Polynomial Numerical Hulls of Perturbed Matrices
    by Madjid Khakshour, Gholamreza Aghamollaei
    Published 2019-04-01
    Subjects: “...numerical range...”
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    Article
  2. 82
    Norm inequalities involving a special class of functions for sector matrices
    Subjects: “...Numerical range...”
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    Article
  3. 83
    On multiparameter spectral theory
    by Lokenath Debnath, Ram Verma
    Published 1991-01-01
    Subjects: “...numerical range...”
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    Article
  4. 84
    Symmetric Representation of Ternary Forms Associated to Some Toeplitz Matrices †
    by Mao-Ting Chien, Hiroshi Nakazato
    Published 2018-02-01
    Subjects: “...numerical range...”
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    Article
  5. 85
    Isometries of a generalized numerical radius
    Subjects: “...Numerical range...”
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  6. 86
    An envelope for the spectrum of a matrix
    by Psarrakos Panayiotis, Tsatsomeros Michael
    Published 2012-02-01
    Subjects: “...numerical range...”
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    Article
  7. 87
    Non-selfadjoint operator functions
    by Torshage, Axel
    Published 2017
    Subjects: “...numerical range...”
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    Doctoral Thesis
  8. 88
    Extensions of inequalities for sector matrices
    by Song Lin, Xiaohui Fu
    Published 2019-05-01
    Subjects: “...Numerical ranges...”
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    Article
  9. 89
    On Birkhoff – James and Roberts orthogonality
    by Arambašic Ljiljana, Rajic Rajna
    Published 2018-05-01
    Subjects: “...numerical range...”
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    Article
  10. 90
    Further extensions of Hartfiel’s determinant inequality to multiple matrices
    by Luo Wenhui
    Published 2021-02-01
    Subjects: “...numerical range...”
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    Article
  11. 91
    New class of operators where the distance between the identity operator and the generalized Jordan ∗-derivation range is maximal
    by Messaoudene Hadia, Mesbah Nadia
    Published 2021-08-01
    Subjects: “...numerical range...”
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    Article
  12. 92
    On the Field of Values of the Inverse of a Matrix
    by Zachlin, Paul Francis
    Published 2007
    Subjects: “...numerical range...”
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  13. 93
    Inégalités de von Neumann sous contraintes, image numérique de rang supérieur et applications à l’analyse harmonique
    by Gaaya, Haykel
    Published 2011
    Subjects: “...Higher rank numerical range...”
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  14. 94
    Diagonal entries on the boundary of thenumerical range
    by Wen-shiung Lai, 賴文雄
    Published 2004
    “...碩士 === 東吳大學 === 數學系 === 94 === Let A be an n-by-n complex matrix. Then the numerical range of A...”
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  15. 95
    Gau-Wu numbers of certain matrices
    by Lee, Hsin-Yi, 李信儀
    Published 2014
    “... of the numerical range W(A). This number k(A) is called the Gau-Wu number of the matrix A. If A is a normal or a...”
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  16. 96
    The numerical radii of weighted shift matrices
    by Hue-An Sheu, 許惠安
    Published 2011
    “...碩士 === 東吳大學 === 數學系 === 99 === Abstract Let A be an n-by-n complex matrix. The numerical range of A...”
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  17. 97
    國小六年級兒童比概念分析之研究
    by KUO-CHI-MING, 郭祈銘
    Published 2007
    “.... Secondly, numerical range from fraction to integer is positioned in the lower status of the ratio meaning...”
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  18. 98
    Crouzeix's Conjecture and the GMRES Algorithm
    by Luo, Sarah McBride
    Published 2011
    “... to the size of that polynomial over the numerical range, to describing GMRES convergence....”
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  19. 99
    A class of tridiagonal operators associated to some subshifts
    “... sequences. Using only elementary techniques we prove that the numerical range of such operators is contained...”
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    Article
  20. 100
    Autour des projections orthogonales : image numérique, principe d’incertitude et problème du sous-espace invariant
    by Klaja, Hubert
    Published 2014
    “... projections, numerical ranges of operators acting on a Hilbert space, uncertainty principles, the invariant...”
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