On certain coefficient inequalities of univalent functions
On certain coefficient inequalities of univalent functions
Introduction.In the present paper we shall establish some coefficient inequalities of univalent functions by Schiffer's variational method [2],Let 5 be a family of normalized functions f(z) regular and univalent in that is, let f(z) have the Taylor expansionTHEOREM 1.In S there holds an inequality Equality can occur only for the …