Results 61 to 70 of about 85 (82)

An envelope for the spectrum of a matrix

open access: yesOpen Mathematics, 2012
Psarrakos Panayiotis   +1 more
doaj   +1 more source
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More accurate numerical radius inequalities (I)

Linear and Multilinear Algebra, 2021
H R Moradi, Mohammad Sababheh
exaly  

On some 4-by-4 matrices with bi-elliptical numerical ranges

Linear and Multilinear Algebra, 2021
Ilya Spitkovsky
exaly  

Norms of Schur multipliers

Illinois Journal of Mathematics, 2007
Kenneth Davidson, Allan P Donsig
exaly  

Preimages of the Numerical Range

American Mathematical Monthly, 2018
Michael Lachance
exaly  

On the numerical range of a matrix

Linear and Multilinear Algebra, 2008
Michiel Hochstenbach
exaly  

Young-type inequalities and their matrix analogues

Linear and Multilinear Algebra, 2015
Horst Alzer   +2 more
exaly  

The C -Numerical Range in Infinite Dimensions

Linear and Multilinear Algebra, 2020
Günther Dirr, Frederik vom Ende
exaly  

ELLIPTIC NUMERICAL RANGES OF $4 \times 4$ MATRICES

Taiwanese Journal of Mathematics, 2006
Hwa-Long Gau
exaly  

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