22 research outputs found

    Weighted Differentiation Composition Operator from Logarithmic Bloch Spaces to Zygmund-Type Spaces

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    Let H() denote the space of all holomorphic functions on the unit disk of ℂ, u∈H() and let  n be a positive integer, φ a holomorphic self-map of , and μ a weight. In this paper, we investigate the boundedness and compactness of a weighted differentiation composition operator φ,unf(z)=u(z)f(n)(φ(z)),f∈H(), from the logarithmic Bloch spaces to the Zygmund-type spaces

    Essential norm of an integral-type operator from ω-Bloch spaces to μ-Zygmund spaces on the unit ball

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    In this paper, we give an estimate for the essential norm of an integral-type operator from ω\omega-Bloch spaces to μ\mu-Zygmund spaces on the unit ball

    Generalized Stević-Sharma type operators from derivative Hardy spaces into Zygmund-type spaces

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    Let u,v u, v be two analytic functions on the open unit disk D {\mathbb D} in the complex plane, φ \varphi an analytic self-map of D {\mathbb D} , and m,n m, n nonnegative integers such that m < n . In this paper, we consider the generalized Stević-Sharma type operator Tu,v,φm,nf(z)=u(z)f(m)(φ(z))+v(z)f(n)(φ(z)) T_{u, v, \varphi}^{m, n}f(z) = u(z)f^{(m)}(\varphi(z))+v(z)f^{(n)}(\varphi(z)) acting from the derivative Hardy spaces into Zygmund-type spaces, and investigate its boundedness, essential norm and compactness

    Stevi\'c-Sharma type operators between Bergman spaces induced by doubling weights

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    Using Khinchin's inequality, Ger\check{\mbox{s}}gorin's theorem and the atomic decomposition of Bergman spaces, we estimate the norm and essential norm of Stevi\'c-Sharma type operators from weighted Bergman spaces AωpA_\omega^p to AμqA_\mu^q and the sum of weighted differentiation composition operators with different symbols from weighted Bergman spaces AωpA_\omega^p to H∞H^\infty.The estimates of those between Bergman spaces remove all the restrictions of a result in [Appl. Math. Comput.,{\bf 217}(2011),8115--8125]. As a by-product, we also get an interpolation theorem for Bergman spaces induced by doubling weights

    Spaces to Bloch-Type Spaces

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    We study the boundedness and compactness of the products of composition and differentiation operators from Q K p, q spaces to Bloch-type spaces and little Bloch-type spaces

    Logarithmic Bergman-type space and a sum of product-type operators

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    One of the aims of the present paper is to obtain some properties about logarithmic Bergman-type space on the unit ball. As some applications, the bounded and compact operators Su⃗,φm=∑i=0mMuiCφℜi \mathfrak{S}^m_{\vec{u}, {\varphi}} = \sum_{i = 0}^{m}M_{u_i}C_{\varphi}\Re^{i} from logarithmic Bergman-type space to weighted-type space on the unit ball are completely characterized

    Compact generalized weighted composition operators on the Bergman space

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    We characterize the compactness of the generalized weighted composition operators acting on the Bergman space
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