232 citations · 512 across the 60 of their papers we have counts for
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Sufficient Conditions for Starlike Functions Associated with the Lemniscate of Bernoulli
S. Sivaprasad Kumar, Virendra Kumar, V. Ravichandran +1
Let -1\leq B<A\leq 1. Condition on β, is determined so that 1+βzp'(z)/p^k(z)\prec(1+Az)/(1+Bz)\;(-1<k\leq3) implies p(z)\prec \sqrt{1+z}. Similarly, condition on βis determined so…
Bounds for the Second Hankel Determinant of Certain Univalent Functions
Lee See Keong, V. Ravichandran, Shamani Supramaniam
The estimates for the second Hankel determinant a_2a_4-a_3^2 of analytic function f(z)=z+a_2 z^2+a_3 z^3+...b for which either zf'(z)/f(z) or 1+zf"(z)/f'(z) is subordinate to certa…
Univalence and convexity in one direction of the convolution of harmonic mappings
Sumit Nagpal, V. Ravichandran
Let denote the class of all complex-valued harmonic functions in the open unit disk normalized by , and let be the…
A comprehensive class of harmonic functions defined by convolution and its connection with integral transforms and hypergeometric functions
Sumit Nagpal, V. Ravichandran
For given two harmonic functions and with real coefficients in the open unit disk , we study a class of harmonic functions $f(z)=z-\sum_{n=2}^{\infty}A_nz^{n}+\…