Fen Edebiyat Fakültesi / Faculty of Letters and Sciences Matematik - Bilgisayar / Mathematics and Computer ScienceHayami, ToshioKuroki, KazuoYavuz Duman, EmelOwa, Shigeyoshi2018-09-062018-09-062012https://hdl.handle.net/11413/2657The partial sums f3(z) of some extermal functions for various classes S∗, K and R of starlike functions, convex functions and functions with positive real part in the open unit disk U, respectively, are discussed. In general, the partial sums can not preserve the same character as the initial functions. The object of the present paper is to discuss the radius problems for partial sums of some extremal functions for the classes S∗, K and R.en-USstarlike functionsconvex functionsradius problems for partial sumsextremal functionsArticle2-s2.0-84856565280