Results 11 to 20 of about 434,525 (329)
Schwarz norms for operators [PDF]
Pacific Journal of Mathematics, 1968 James E. Williams
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Norms of compact perturbations of operators [PDF]
Pacific Journal of Mathematics, 1977 Catherine L. Olsen
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Proceedings of the American Mathematical Society, 1988 We give a short and elementary proof of the formula for the norm of a free convolution operator on L 2 {L^2} of a discrete group. The formula was obtained in 1976 by C. Akemann and Ph. Ostrand, and by several other authors afterwards.
Massimo A. Picardello, Tadeusz Pytlik
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Norm Bounds for Operator Extensions
Journal of Mathematical Analysis and Applications, 1995 Consider the partial \(n\times n\) matrix \(F\) with bounded Hilbert space operator entries, where the lower triangular entries are specified and the strictly upper triangular entries are to be determined. Any choice of the strictly upper triangular entries provides a completion or extension of \(F\).
Mihály Bakonyi +3 more
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Operators That Achieve the Norm [PDF]
Integral Equations and Operator Theory, 2011 17 ...
Wladimir Neves, Xavier Carvajal
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Norms and CB norms of Jordan elementary operators
Bulletin des Sciences Mathématiques, 2003 To appear in Bull Sci ...
Richard M. Timoney
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$$\mu$$-Norm of an Operator [PDF]
Proceedings of the Steklov Institute of Mathematics, 2020 Let $({\cal X},\mu)$ be a measure space. For any measurable set $Y\subset{\cal X}$ let $1_Y : {\cal X}\to{\mathbb R}$ be the indicator of $Y$ and let $\pi_Y$ be the orthogonal projector $L^2({\cal X})\ni f\mapsto\pi_Y f = 1_Y f$. For any bounded operator $W$ on $L^2({\cal X},\mu)$ we define its $\mu$-norm $\|W\|_\mu = \inf_\chi\sqrt{\sum \mu(Y_j) \|W ...
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Norm of Hilbert operator on sequence spaces
Journal of Inequalities and Applications, 2020 In this paper, we focus on the problem of finding the norm of Hilbert operator on some sequence spaces. Meanwhile, we obtain several interesting inequalities and inclusions.
Hadi Roopaei
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Norm attaining operators [PDF]
Israel Journal of Mathematics, 1982 Every Banach space is isomorphic to a space with the property that the norm-attaining operators are dense in the space of all operators into it, for any given domain space. A super-reflexive space is arbitrarily nearly isometric to a space with this property.
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, 2010 Let (X,m) and (Y,n) be standard measure spaces. A function f in $L^\infty(X\times Y,m\times n)$ is called a (measurable) Schur multiplier if the map $S_f$, defined on the space of Hilbert-Schmidt operators from $L_2(X,m)$ to $L_2(Y,n)$ by multiplying ...
Shulman, V. S. +2 more
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