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Published online by Cambridge University Press: 20 November 2018
Theorem. Letbe a function holomorphic in the disk, wherep is a natural number and
If
then then f(z) assumes every complex value infinitely often in every sector
.
The purpose of this note is to prove the above result. To do this, we first observe that from the condition a<∞, we can easily show that the derivative f′(z) satisfying