A note on Hayman’s problem and the sharing value
A note on Hayman’s problem and the sharing value
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DOI:
10.3792/pjaa.90.119
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发表时间:
2014-08
期刊:
影响因子:
--
通讯作者:
Yuntong Li
中科院分区:
文献类型:
--
作者:
Yuntong Li
: Let f be a nonconstant meromorphic functions, n; k be two positive integers. Suppose that f n and ð f n Þ ð k Þ share the value a ð6¼ 0 ; 1Þ CM. If either (1) n > k þ 2 , or (2) n > k þ 1 and (cid:2) N ð r; f Þ ¼ (cid:2)T ð r; f Þð (cid:2) 2 ½ 0 ; 12 ÞÞ , then f n ¼ ð f n Þ ð k Þ and f assumes the form f ð z Þ ¼ ce (cid:2)n z where c is a nonzero constant and (cid:2) k ¼ 1 .