3 papers
math.CV2022
Sufficient conditions and radius problems for the Silverman class
S. Sivaprasad Kumar, Priyanka Goel
For and let \begin{equation}\label{1} G_{λ,α}=\left\{f\in\mathcal{A}:\left|\dfrac{1-α+αzf''(z)/f'(z)}{zf'(z)/f(z)}-(1-α)\right|<λ, z\in\mathbb{D}\right\}, \end{eq…
math.CV2022
Application of Pythagorean means and Differential Subordination
S. Sivaprasad Kumar, Priyanka Goel
For let be the convex weighted harmonic mean of and We establish differential subordination implications of the form \begin{equation*} H_α(p(z),…
math.CV2019
On sharp bounds of certain Close-to-Convex functions
Priyanka Goel, S. Sivaprasad Kumar
We derive general formula for the fourth coefficient of the functions belonging to the Carathéodory class involving the parameters lying in the open unit disk. Further, we obtain s…