Abstract
Let \(\varphi \) be a complex-valued function in the plane \({\mathbb {C}}.\) The superposition operator is defined by \( S_\varphi (f)=\varphi \circ f\). In this paper, we characterize the nonlinear superposition operators \(S_\varphi \) acting between the Zygmund-type and Bloch-type spaces in terms of the order and type or the degree of \(\varphi \).
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The authors warmly thank the anonymous referee for many suggestions which helped to improve the quality of the paper.
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This work was supported in part by the National Natural Science Foundation of China (Grant Nos. 11771323 and 11701422).
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Liang, YX., Zhou, ZH. The Nonlinear Superposition Operators Between Zygmund-Type and Bloch-Type Spaces. Mediterr. J. Math. 16, 39 (2019). https://doi.org/10.1007/s00009-019-1304-3
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DOI: https://doi.org/10.1007/s00009-019-1304-3