Normal Criteria of Function Families Concerning Shared Values

We study the normality of families of meromorphic functions concerning shared values. We consider whether a family of meromorphic functions ℱ is normal in D, if, for every pair of functions f and g in ℱ, f′−af−n and g′−ag−n share the value b, where a and b are two finite complex numbers such that a≠...

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Main Authors: Wenjun Yuan, Bing Zhu, Jianming Lin
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Journal of Applied Mathematics
Online Access:http://dx.doi.org/10.1155/2011/790942
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author Wenjun Yuan
Bing Zhu
Jianming Lin
author_facet Wenjun Yuan
Bing Zhu
Jianming Lin
author_sort Wenjun Yuan
collection DOAJ
description We study the normality of families of meromorphic functions concerning shared values. We consider whether a family of meromorphic functions ℱ is normal in D, if, for every pair of functions f and g in ℱ, f′−af−n and g′−ag−n share the value b, where a and b are two finite complex numbers such that a≠0, n is a positive integer. Some examples show that the conditions in our results are best possible.
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publishDate 2011-01-01
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series Journal of Applied Mathematics
spelling doaj-art-dbb0b0fdf5c44f08b40dc3fa2145346e2025-08-20T02:21:30ZengWileyJournal of Applied Mathematics1110-757X1687-00422011-01-01201110.1155/2011/790942790942Normal Criteria of Function Families Concerning Shared ValuesWenjun Yuan0Bing Zhu1Jianming Lin2School of Mathematics and Information Science, Guangzhou University, Guangzhou 510006, ChinaCollege of Computer Engineering Technology, Guangdong Institute of Science and Technology, Zhuhai 519090, ChinaSchool of Economic and Management, Guangzhou University of Chinese Medicine, Guangzhou 510006, ChinaWe study the normality of families of meromorphic functions concerning shared values. We consider whether a family of meromorphic functions ℱ is normal in D, if, for every pair of functions f and g in ℱ, f′−af−n and g′−ag−n share the value b, where a and b are two finite complex numbers such that a≠0, n is a positive integer. Some examples show that the conditions in our results are best possible.http://dx.doi.org/10.1155/2011/790942
spellingShingle Wenjun Yuan
Bing Zhu
Jianming Lin
Normal Criteria of Function Families Concerning Shared Values
Journal of Applied Mathematics
title Normal Criteria of Function Families Concerning Shared Values
title_full Normal Criteria of Function Families Concerning Shared Values
title_fullStr Normal Criteria of Function Families Concerning Shared Values
title_full_unstemmed Normal Criteria of Function Families Concerning Shared Values
title_short Normal Criteria of Function Families Concerning Shared Values
title_sort normal criteria of function families concerning shared values
url http://dx.doi.org/10.1155/2011/790942
work_keys_str_mv AT wenjunyuan normalcriteriaoffunctionfamiliesconcerningsharedvalues
AT bingzhu normalcriteriaoffunctionfamiliesconcerningsharedvalues
AT jianminglin normalcriteriaoffunctionfamiliesconcerningsharedvalues