S. Lee

activity

20122026

most citedRadius of Starlikeness for Classes of Analytic Functions

8 citations · 15 across the 7 of their papers we have counts for

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Showing 2012 · math.CVShow all

2 papers · 2 filters

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…