1. Properties of q-shift difference-differential polynomials of meromorphic functions
- Author
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Hong-Yan Xu, Xin-Li Wang, and Tang-Sen Zhan
- Subjects
Pure mathematics ,Polynomial ,Algebra and Number Theory ,Degree (graph theory) ,Entire function ,Applied Mathematics ,Function (mathematics) ,Algebra ,Difference polynomials ,Ordinary differential equation ,Uniqueness ,Analysis ,Mathematics ,Meromorphic function - Abstract
In this paper, we deal with the zeros of the q-shift difference-differential polynomials [ P ( f ) ∏ j = 1 d f ( q j z + c j ) s j ] ( k ) − α ( z ) and ( P ( f ) ∏ j = 1 d [ f ( q j z + c j ) − f ( z ) ] s j ) ( k ) − α ( z ) , where P ( f ) is a nonzero polynomial of degree n, q j , c j ∈ C ∖ { 0 } ( j = 1 , … , d ) are constants, n , d , s j ( j = 1 , … , d ) ∈ N + and α ( z ) is a small function of f. The results of this paper are an extension of the previous theorems given by Chen and Chen and Qi. We also investigate the value sharing for q-shift difference polynomials of entire functions and obtain some results which extend the recent theorem given by Liu, Liu and Cao. MSC:39A50, 30D35.
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