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 Meromorphic univalent harmonic functions with negative coefficients Bull. Korean Math. Soc. 1999 Vol. 36, No. 4, 763-770 Jay M. Jahangiri and Herb Silverman College of Charleston, College of Charleston Abstract : The purpose of this paper is to give sufficient coefficient conditions for a class of univalent harmonic functions that map each $|z|=r>1$ onto a curve that bounds a domain that is starlike with respect to origin. Furthermore, it is shown that these conditions are also necessary when the coefficients are negative. Extreme points for these classes are also determined. Finally, comparable results are given for the convex analog. Keywords : harmonic, univalent, starlike, and convex functions MSC numbers : 30C45, 30C50 Full-Text :