Uniqueness of Entire Functions Sharing Polynomials with Their Derivatives

被引:0
|
作者
Sahoo, Pulak [1 ]
Biswas, Gurudas [2 ]
机构
[1] Univ Kalyani, Dept Math, Kalyani 741235, W Bengal, India
[2] Hooghly Womens Coll, Dept Math, Chinsura 712103, W Bengal, India
来源
KYUNGPOOK MATHEMATICAL JOURNAL | 2018年 / 58卷 / 03期
关键词
entire function; derivative; uniqueness;
D O I
10.5666/KMJ.2018.58.3.519
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this paper, we investigate the uniqueness problem of entire functions sharing two polynomials with their k-th derivatives. We look into the conjecture given by Lu, Li and Yang [Bull. Korean Math. Soc., 51 (2014), 1281-1289] for the case F = f(n) P(f), where f is a transcendental entire function and P(z) = a(m)z(m) + a(m-1)z(m-1) + . . . + a(1)z + a(0) (not equivalent to 0), m is a nonnegative integer, a(m), a(m-1), ... ,a(1), a(0) are complex constants and obtain a re sult which improves and generalizes many previous results. We also provide some examples to show that the conditions taken in our result are best possible.
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页码:519 / 531
页数:13
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