Some sufficient conditions for strongly starlikeness

We consider strongly starlikeness of order α of functions f(z)=z+an+1zn+1+⋯ which are analytic in the unit disc and satisfy the condition of the form |f′(z)(zf(z))1+μ−1|<λ, 0<μ<1,  0<λ<1.

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Main Authors: Milutin Obradović, Shigeyoshi Owa
Format: Article
Language:English
Published: Wiley 2000-01-01
Series:International Journal of Mathematics and Mathematical Sciences
Subjects:
Online Access:http://dx.doi.org/10.1155/S0161171200004154
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author Milutin Obradović
Shigeyoshi Owa
author_facet Milutin Obradović
Shigeyoshi Owa
author_sort Milutin Obradović
collection DOAJ
description We consider strongly starlikeness of order α of functions f(z)=z+an+1zn+1+⋯ which are analytic in the unit disc and satisfy the condition of the form |f′(z)(zf(z))1+μ−1|<λ, 0<μ<1,  0<λ<1.
format Article
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institution Kabale University
issn 0161-1712
1687-0425
language English
publishDate 2000-01-01
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record_format Article
series International Journal of Mathematics and Mathematical Sciences
spelling doaj-art-5a908f581b2c41ca8ab40aa456420b2f2025-08-20T03:34:58ZengWileyInternational Journal of Mathematics and Mathematical Sciences0161-17121687-04252000-01-0124964364710.1155/S0161171200004154Some sufficient conditions for strongly starlikenessMilutin Obradović0Shigeyoshi Owa1Department of Mathematics, Faculty of Technology and Metallurgy, 4 Karnegijova Street, Belgrade 11000, SerbiaDepartment of Mathematics, Kinki University, Osaka, Higashi-Osaka 577-8502, JapanWe consider strongly starlikeness of order α of functions f(z)=z+an+1zn+1+⋯ which are analytic in the unit disc and satisfy the condition of the form |f′(z)(zf(z))1+μ−1|<λ, 0<μ<1,  0<λ<1.http://dx.doi.org/10.1155/S0161171200004154Analytic functionstrongly starlikenesssubordination.
spellingShingle Milutin Obradović
Shigeyoshi Owa
Some sufficient conditions for strongly starlikeness
International Journal of Mathematics and Mathematical Sciences
Analytic function
strongly starlikeness
subordination.
title Some sufficient conditions for strongly starlikeness
title_full Some sufficient conditions for strongly starlikeness
title_fullStr Some sufficient conditions for strongly starlikeness
title_full_unstemmed Some sufficient conditions for strongly starlikeness
title_short Some sufficient conditions for strongly starlikeness
title_sort some sufficient conditions for strongly starlikeness
topic Analytic function
strongly starlikeness
subordination.
url http://dx.doi.org/10.1155/S0161171200004154
work_keys_str_mv AT milutinobradovic somesufficientconditionsforstronglystarlikeness
AT shigeyoshiowa somesufficientconditionsforstronglystarlikeness