On the uniqueness of meromorphic function and its shift sharing values with truncated multiplicities
Bull. Korean Math. Soc. 2019 Vol. 56, No. 3, 789-799
Published online March 12, 2019
Printed May 31, 2019
Hai Nam Nguyen, Vangty Noulorvang, Duc Thoan Pham
National University of Civil Engineering; National University of Education; National University of Civil Engineering
Abstract : In this paper, we deal with unicity of a nonconstant zero-order meromorphic function $f(z)$ and its shift $f(qz)$ when they share four distinct values $IM$ or share three distinct values with multiplicities truncated to level 4 in the extended complex plane, where $q\in\mathbb C\setminus\{0\}$. We also give an uniqueness result for $f(z)$ sharing sets with its shift.
Keywords : meromorphic functions, shifts sharing values, uniqueness theo\-rems
MSC numbers : Primary 32H30, 32A22; Secondary 30D35
Supported by : This research of the first author is funded by National University of Civil Engineering (NUCE) under grant number 20-2019/KHXD-T-D
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