Results 71 to 80 of about 541 (94)
Jordan left derivations and some left derivable maps
Let A be an algebra and M be a left A -module. We say that a linear mapping φ : A → M is a left derivable mapping at P if φ(ST ) = Sφ(T ) +Tφ(S) for any S,T ∈ A with ST = P .
Jiankui Li, Jiren Zhou
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NONLINEAR JORDAN HIGHER DERIVATIONS ON TRIANGULAR RINGS
Let T be a triangular ring. We say that a family of maps δ = {δn, δn : T → T , n ∈ N} is a Jordan higher derivable map (without assumption of additivity or continuity) if δn(AB + BA) = ∑ i+j=n [δi(A)δj(B) + δj(B)δi(A)] for all A,B ∈ T . In this paper, we
Chunhui Xue, Runling An, Huiyuan Zhang
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Commuting of block dual Toeplitz operators
In this paper, we characterize the commuting (semi-commuting) and the essentially commuting (semi-commuting) of block dual Toeplitz operators. Mathematics subject classification (2010): 47B35, 47B47.
Bo Zhang, Yufeng Lu
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A simulation algorithm for a single server retrial queuing system with batch arrivals
Many systems of real word are modeled by retrial queuing system with batch arrivals. Analytical formulas for this class of systems are complicated and address only particular cases.
Florea Ion, Nǎnǎu Corina-Ştefania
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Upper triangular operator matrices, asymptotic intertwining and Browder, Weyl theorems
Given a Banach space X, let MC∈B(X⊕X) denote the upper triangular operator matrix MC=(AC0B), and let δAB∈B(B(X)) denote the generalized derivation δAB(X)=AX−XB.
B. Duggal, I. Jeon, I. Kim
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If T1{{\mathbb{T}}}_{1} and T2{{\mathbb{T}}}_{2} are commuting dd-tuples of Hilbert space operators in B(ℋ)dB{\left({\mathcal{ {\mathcal H} }})}^{d} such that (T1*⊗I+I⊗T2*,T1⊗I+I⊗T2)\left({{\mathbb{T}}}_{1}^{* }\otimes I+I\otimes {{\mathbb{T}}}_{2}^{* },{
Duggal Bhagwati Prashad, Kim In Hyoun
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Bloom-type two-weight inequalities for commutators of maximal functions
We study Bloom-type two-weight inequalities for commutators of the Hardy-Littlewood maximal function and sharp maximal function. Some necessary and sufficient conditions are given to characterize the two-weight inequalities for such commutators.
Zhang Pu, Fan Di
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Dietary habits are associated with the prevalence of type 2 diabetes: a study among a middle eastern population. [PDF]
Mahdi S+7 more
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For a given Banach algebra ℳ{\mathcal{ {\mathcal M} }} and a continuous endomorphism ω\omega on ℳ{\mathcal{ {\mathcal M} }}, we define ℳ{\mathcal{ {\mathcal M} }} to be ωℒ{\omega }_{{\mathcal{ {\mathcal L} }}}-biprojective and ω¯\overline{\omega ...
Ghorbani Zahra
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About instability in an elastic Cosserat body with pores
This article is centered on the study of the isotropic, porous Cosserat elastic media, realized by means of a parallel with the media of the same type, but anisotropic, by following the rewriting in a new form of the equations that govern this theory ...
Codarcea-Munteanu L.+2 more
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