Results 1 to 10 of about 17,966 (168)

Norm inequalities in operator ideals

open access: yesJournal of Functional Analysis, 2008
23 ...
Gabriel Larotonda
exaly   +5 more sources

New Schweizer Sklar Norm Picture Fuzzy Operator and Decision Application [PDF]

open access: yesJisuanji gongcheng, 2023
Existing picture fuzzy operational laws do not satisfy the closure and picture fuzzy aggregation operators, mostly aggregating the evaluation information through a single operator, which interferes with the comprehensive consideration of the relationship
WANG Lei, WANG Nan
doaj   +1 more source

Time-dependent unbounded Hamiltonian simulation with vector norm scaling [PDF]

open access: yesQuantum, 2021
The accuracy of quantum dynamics simulation is usually measured by the error of the unitary evolution operator in the operator norm, which in turn depends on certain norm of the Hamiltonian.
Dong An, Di Fang, Lin Lin
doaj   +1 more source

Operators That Achieve the Norm [PDF]

open access: yesIntegral Equations and Operator Theory, 2011
17 ...
Carvajal, Xavier, Neves, Wladimir
openaire   +3 more sources

$$\mu$$-Norm of an Operator [PDF]

open access: yesProceedings of the Steklov Institute of Mathematics, 2020
Let $({\cal X},μ)$ 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 $π_Y$ be the orthogonal projector $L^2({\cal X})\ni f\mapstoπ_Y f = 1_Y f$. For any bounded operator $W$ on $L^2({\cal X},μ)$ we define its $μ$-norm $\|W\|_μ= \inf_χ\sqrt{\sum μ(Y_j) \|Wπ_Y\|^2}$, where the
openaire   +2 more sources

On Lipschitz continuity with respect to the Poincaré metric of linear contractions between Möbius gyrovector spaces

open access: yesJournal of Inequalities and Applications, 2021
For every linear operator between inner product spaces whose operator norm is less than or equal to one, we show that the restriction to the Möbius gyrovector space is Lipschitz continuous with respect to the Poincaré metric.
Keiichi Watanabe
doaj   +1 more source

Norms of a Product of Integral and Composition Operators between Some Bloch-Type Spaces

open access: yesAxioms, 2023
We present some formulas for the norm, as well as the essential norm, of a product of composition and an integral operator between some Bloch-type spaces of analytic functions on the unit ball, in terms of given symbols and weights.
Stevo Stević
doaj   +1 more source

Gap Between Operator Norm and Spectral Radius for the Square of Antidiagonal Block Operator Matrices

open access: yesCommunications in Advanced Mathematical Sciences, 2022
In this work, the gap between operator norm and spectral radius for the square of antidiagonal block operator matrices in the direct sum of Banach spaces has been investigated, and also the gap between operator norm and numerical radius for the square of
Elif Otkun Çevik
doaj   +1 more source

Numerical Radius and Operator Norm Inequalities

open access: yesJournal of Inequalities and Applications, 2009
A general inequality involving powers of the numerical radius for sums and products of Hilbert space operators is given. This inequality generalizes several recent inequalities for the numerical radius, and includes that if and are operators on a ...
Albadawi Hussien, Shebrawi Khalid
doaj   +2 more sources

Operator -norms and their use [PDF]

open access: yesSbornik: Mathematics, 2020
Abstract We consider a family of equivalent norms (called operator -norms) on the algebra
openaire   +3 more sources

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