Document Type : Research Paper

Authors

• L. Stanciu ¹
• D. Breaz ²

¹ Department of Mathematics, Targul din Vale Str., No.1, 110040, Pitesti, Arges, Romania

² Department of Mathematics, Alba Iulia, Str. N. Iorga, 510000, No. 11-13, Romania

Abstract

In this paper, we study the convexity of the integral operator $\int_0^z\prod_{i=1}^n(te^{f_i(t)})^{\gamma_i}dt$  where the function $f_i, i\in\{1,2,\ldots,n\}$  satisfy the condition
$$|f_i'(z)(\frac{z}{f_i(z)})^{\mu_i}-1|<1-\alpha_i,\quad i\in\{1,2,\ldots,n\}.$$

Keywords

• Analytic functions
• Integral Operator
• Starlike functions
• Convex functions