Displaying 181 – 200 of 273

Showing per page

On some α -convex functions.

Acu, Mugur, Al-Oboudi, Fatima, Darus, Maslina, Owa, Shigeyoshi, Polatog̃lu, Yaşar, Yavuz, Emel (2008)

International Journal of Open Problems in Computer Science and Mathematics. IJOPCM

On starlikeness of certain integral transforms

S. Ponnusamy (1992)

Annales Polonici Mathematici

Let A denote the class of normalized analytic functions in the unit disc U = z: |z| < 1. The author obtains fixed values of δ and ϱ (δ ≈ 0.308390864..., ϱ ≈ 0.0903572...) such that the integral transforms F and G defined by F ( z ) = 0 z ( f ( t ) / t ) d t and G ( z ) = ( 2 / z ) 0 z g ( t ) d t are starlike (univalent) in U, whenever f ∈ A and g ∈ A satisfy Ref’(z) > -δ and Re g’(z) > -ϱ respectively in U.

On strong starlikeness criteria of p -valent functions

V. B. L. Chaurasia, Hari Singh Parihar (2008)

Mathematica Bohemica

H. Silverman (1999) investigated the properties of functions defined in terms of the quotient of the analytic representations of convex and starlike functions. Many research workers have been working on analytic functions to be strongly starlike like Obradović and Owa (1989), Takahashi and Nunokawa (2003), Lin (1993) etc. In this paper we obtain a sufficient condition for p -valent functions to be strongly starlike of order α .

Currently displaying 181 – 200 of 273