S. Lee

most citedInitial Coefficients of Bi-univalent Functions

1 citations · 1 across the 3 of their papers we have counts for

collaborators

3 papers

math.CV2013

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…

math.CV2012

Close-to-convexity and starlikeness of analytic functions

Lee See Keong, V. Ravichandran, Shamani Supramaniam

For functions $f (z) = z^{p} + a_{n + 1} z^{p + 1} + ...$ defined on the open unit disk, the condition $ℜ (f^{'} (z) / z^{p - 1}) > 0$ is sufficient for close-to-convexity of $f$ . By making use of this…

math.CV2012★ 1 cited

Initial Coefficients of Bi-univalent Functions

See Keong Lee, V. Ravichandran, Shamani Supramaniam

An analytic function $f$ defined on the open unit disk $D = {z : ∣ z ∣ < 1}$ is bi-univalent if the function $f$ and its inverse $f^{- 1}$ are univalent in $D$ . Estimate…