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Zeros of derivatives of strictly nonreal meromorphic functions. (English) Zbl 1445.30019
Let $$f$$ be a strictly nonreal meromorphic function in the complex plane. The author proves several results showing that $$f$$ can be written in certain forms provided all (or all but finitely many) zeros of the derivatives $$f^{(m)}, m=0,\dots,l$$, for certain values of $$l$$, are real. Also, a result is proved which, in particular, describes all $$f$$ of finite lower order such that all zeros and poles of $$f$$ and $$f''$$ are real.
##### MSC:
 30D35 Value distribution of meromorphic functions of one complex variable, Nevanlinna theory
##### Keywords:
meromorhpic function; real zeros; zeros of derivatives
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##### References:
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