A study on degree of approximation by summability means of the Fourier-Laguerre expansion.
On summability of Fourier series.
Compactness of composition operators acting on weighted Bergman-Orlicz spaces
We characterize compact composition operators acting on weighted Bergman-Orlicz spaces , where α > -1 and ψ is a strictly increasing, subadditive convex function defined on [0,∞) and satisfying ψ(0) = 0, the growth condition and the Δ₂-condition. In fact, we prove that is compact on if and only if it is compact on the weighted Bergman space .
Composition operators from weighted Bergman-Privalov spaces to Zygmund type spaces on the unit disk
We characterize the boundedness and compactness of composition operators from weighted Bergman-Privalov spaces to Zygmund type spaces on the unit disk.
Compact composition operators on Hardy-orlicz spaces
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