A New Subclass of Analytic Functions Defined by Using Salagean <i>q</i>-Differential Operator

In our present investigation, we use the technique of convolution and quantum calculus to study the Salagean <i>q</i>-differential operator. By using this operator and the concept of the Janowski function, we define certain new classes of analytic functions. Some properties of these clas...

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Main Authors: Muhammad Naeem, Saqib Hussain, Tahir Mahmood, Shahid Khan, Maslina Darus
Format: Article
Language:English
Published: MDPI AG 2019-05-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/7/5/458
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author Muhammad Naeem
Saqib Hussain
Tahir Mahmood
Shahid Khan
Maslina Darus
author_facet Muhammad Naeem
Saqib Hussain
Tahir Mahmood
Shahid Khan
Maslina Darus
author_sort Muhammad Naeem
collection DOAJ
description In our present investigation, we use the technique of convolution and quantum calculus to study the Salagean <i>q</i>-differential operator. By using this operator and the concept of the Janowski function, we define certain new classes of analytic functions. Some properties of these classes are discussed, and numerous sharp results such as coefficient estimates, distortion theorem, radii of star-likeness, convexity, close-to-convexity, extreme points, and integral mean inequalities of functions belonging to these classes are obtained and studied.
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spelling doaj.art-682f46126f8e439192039b26423af3612022-12-21T22:31:53ZengMDPI AGMathematics2227-73902019-05-017545810.3390/math7050458math7050458A New Subclass of Analytic Functions Defined by Using Salagean <i>q</i>-Differential OperatorMuhammad Naeem0Saqib Hussain1Tahir Mahmood2Shahid Khan3Maslina Darus4Department of Mathematics and Statistics, International Islamic University, 44000 Islamabad, PakistanDepartment of Mathematics, COMSATS University Islamabad, Abbottabad Campus, 22060 Abbottabad, PakistanDepartment of Mathematics and Statistics, International Islamic University, 44000 Islamabad, PakistanDepartment of Mathematics, Riphah International University, 44000 Islamabad, PakistanSchool of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Selangor, MalaysiaIn our present investigation, we use the technique of convolution and quantum calculus to study the Salagean <i>q</i>-differential operator. By using this operator and the concept of the Janowski function, we define certain new classes of analytic functions. Some properties of these classes are discussed, and numerous sharp results such as coefficient estimates, distortion theorem, radii of star-likeness, convexity, close-to-convexity, extreme points, and integral mean inequalities of functions belonging to these classes are obtained and studied.https://www.mdpi.com/2227-7390/7/5/458analytic functionssubordinationSalagean q-differential operator
spellingShingle Muhammad Naeem
Saqib Hussain
Tahir Mahmood
Shahid Khan
Maslina Darus
A New Subclass of Analytic Functions Defined by Using Salagean <i>q</i>-Differential Operator
Mathematics
analytic functions
subordination
Salagean q-differential operator
title A New Subclass of Analytic Functions Defined by Using Salagean <i>q</i>-Differential Operator
title_full A New Subclass of Analytic Functions Defined by Using Salagean <i>q</i>-Differential Operator
title_fullStr A New Subclass of Analytic Functions Defined by Using Salagean <i>q</i>-Differential Operator
title_full_unstemmed A New Subclass of Analytic Functions Defined by Using Salagean <i>q</i>-Differential Operator
title_short A New Subclass of Analytic Functions Defined by Using Salagean <i>q</i>-Differential Operator
title_sort new subclass of analytic functions defined by using salagean i q i differential operator
topic analytic functions
subordination
Salagean q-differential operator
url https://www.mdpi.com/2227-7390/7/5/458
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