• Kyungpook Mathematical Journal
• /
• v.55 no.3
• /
• pp.625-639
• /
• 2015

Differential subordinations and superordinations results are obtained for certain meromorphic functions in the punctured unit disk which are associated with an integral operator. These results are obtained by investigating appropriate classes of a dmissible functions. Sandwich-type results are also obtained.

• Bulletin of the Korean Mathematical Society
• /
• v.53 no.1
• /
• pp.127-138
• /
• 2016

Differential subordination and superordination preserving properties for univalent functions in the open unit disk with an operator involving generalized Bessel functions are derived. Some particular cases involving trigonometric functions of our main results are also pointed out.

• Kyungpook Mathematical Journal
• /
• v.49 no.1
• /
• pp.47-55
• /
• 2009

In the present investigation sufficient conditions are found for certain subclass of normalized analytic functions defined by Hadamard product. Differential sandwich theorems are also obtained. As a special case of this we obtain results involving Ruscheweyh derivative, S$\u{a}$l$\u{a}$gean derivative, Carlson-shaffer operator, Dziok-Srivatsava linear operator, Multiplier transformation.

• Kyungpook Mathematical Journal
• /
• v.46 no.1
• /
• pp.97-109
• /
• 2006

In this paper, the authors introduce new classes of p-valent functions defined by Dziok-Srivastava linear operator and the multiplier transformation and study their properties by using certain first order differential subordination and superordination. Also certain inclusion relations are established and an integral transform is discussed.

• Journal of the Korean Mathematical Society
• /
• v.45 no.3
• /
• pp.611-620
• /
• 2008

The purpose of this present paper is to derive some subordination and superordination results involving Carlson-Shaffer operator for certain normalized analytic functions in the open unit disk. Relevant connections of the results, which are presented in the paper, with various known results are also considered.

• Kyungpook Mathematical Journal
• /
• v.49 no.4
• /
• pp.631-646
• /
• 2009

In the present investigation, we introduce new classes of p-valent meromorphic functions defined by Liu-Srivastava linear operator and the multiplier transform and study their properties by using certain first order differential subordination and superordination.