Results 31 to 40 of about 541 (69)

Existence and uniqueness of solutions for certain functional equations and system of functional equations arising in dynamic programming

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
This paper deals with the existence, uniqueness and iterative approximations of solutions for the functional equations and system of functional equations arising in dynamic programming of multistage decision making processes in Banach spaces and complete
Deepmala, Agarwal Ravi P.
doaj   +1 more source

Hilbert–Schmidt‐Type Radii of Operator Pairs

open access: yesJournal of Function Spaces, Volume 2025, Issue 1, 2025.
Let C2H be the Hilbert–Schmidt class on a complex separable Hilbert space H. In light of the recent definition of the weighted numerical radius and motivated by the definition of the Hilbert–Schmidt numerical radius of a pair of operators, we introduce the definition of the weighted Hilbert–Schmidt numerical radius of a pair of operators.
Bashar Mayyas   +2 more
wiley   +1 more source

Analysis of the energy decay of a viscoelasticity type equation

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
In this paper, we study the evolution of the energy density of a sequence of solutions of a problem related to a viscoelasticity model where the viscosity term is a pseudo-differential operator of order 2α with α ∈ (0, 1).
Atallah-Baraket Amel, Trabelsi Maryem
doaj   +1 more source

Comportamento de híbridos de milho no Nordeste Brasileiro: safra 2009/2010. [PDF]

open access: yes, 2011
O presente trabalho teve por objetivo conhecer o comportamento de diversos híbridos simples de milho quando submetido a diferentes condições ambientais do Nordeste brasileiro, para fins de recomendação. Os ensaios foram realizados no ano agrícola de 2009/
CARDOSO, M. J.   +8 more
core  

Remarks on an operator Wielandt inequality

open access: yes, 2015
Let $A$ be a positive operator on a Hilbert space $\mathcal{H}$ with $00.$$ We consider several upper bounds for $\frac{1}{2}|\Gamma+\Gamma^{*}|$.
Zhang, Pingping
core   +2 more sources

Matrix weights and a maximal function with exponent 3/2

open access: yesAdvanced Nonlinear Studies
We build an example of a simple sparse operator for which its norm with scalar A 2 weight has linear estimate in [w]A2 ${\left[w\right]}_{{A}_{2}}$ , but whose norm in matrix setting grows at least as [W]A23/2 ${\left[W\right]}_{{\mathbf{A}}_{2}}^{3/2}$
Treil Sergei, Volberg Alexander
doaj   +1 more source

Estimates for an integral in Lp norm of the (n+1)-th derivative of its integrand [PDF]

open access: yes, 2000
Basing on Taylor’s formula with an integral remaider, an integral is estimated in Lp norm of the (n + 1)-th derivative of its integrand, and the Iyengar’s inequality and many other useful inequalities are ...
Guo, Bai-Ni, Qi, Feng
core  

Power vector inequalities for operator pairs in Hilbert spaces and their applications

open access: yesOpen Mathematics
This study explores the power vector inequalities for a pair of operators (B,C)\left(B,C) in a Hilbert space. By utilizing a Mitrinović-Pečarić-Fink-type inequality for inner products and norms, we derive various power vector inequalities.
Altwaijry Najla   +2 more
doaj   +1 more source

Berezin number inequalities for operators

open access: yesConcrete Operators, 2019
The Berezin transform à of an operator A, acting on the reproducing kernel Hilbert space ℋ = ℋ (Ω) over some (non-empty) set Ω, is defined by Ã(λ) = 〉Aǩ λ, ǩ λ〈 (λ ∈ Ω), where k⌢λ=kλ‖kλ‖${\mathord{\buildrel{\lower3pt\hbox{$\scriptscriptstyle\frown ...
Bakherad Mojtaba, Garayev Mubariz T.
doaj   +1 more source

Comparing maximal mean values on different scales [PDF]

open access: yes, 2015
When computing the average speed of a car over different time periods from given GPS data, it is conventional wisdom that the maximal average speed over all time intervals of fixed length decreases if the interval length increases.
Havenith, Thomas, Scholtes, Sebastian
core   +1 more source

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