摘要
Let f(z)∈S, g(z) be a K-Q. C. in the z-plane, g||z|<1=f(z), we call g(z) the quasi-conformal extension of f(z). Particularly, if g(∞)=∞ we denote g(z)∈S+∞K. Similarly, let F(z)∈(?)K, G(z) be a K-Q.C. in the z-plane, G||z|>1=F(z), we call G(z) the quasi-conformal extension of F(z), particularly, if G(0)=0, we denote G(z)∈(?))K.