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On the Periodicity of Compositions of Entire Functions. II
Published online by Cambridge University Press: 20 November 2018
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In (1) the author suggested the following research problem. Does there exist a non-periodic entire function ƒ such that ƒƒ is periodic? My aim in this note is to give a partial answer to this question and, more generally, to give a partial solution to the following problem: if ƒ and g are entire functions and ƒ(g) is periodic, what can one say about g? These results also extend a previous result of mine; for details, see (2, Theorem 4). We begin with some simple lemmas.
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- Copyright © Canadian Mathematical Society 1968
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