证明了定义在单位圆盘上的亚纯函数族F满足对于任意f∈F(f的零点重数至少k级),并且存在c〉0使得如果f(z)=0有|f(k)(z)|≤c且-Ef(k)(S)-Ef(S)(S={a,b}),那么F在单位圆盘上正规.
Let F be a family of meromorphic functions on the unit disc, If for every f∈ F(the zeros of f is a multiplicity of at least k)and if f(z)=0 then |f(k)(z)|≤c and -Ef(k)(S)-Ef(S)(S={a,b}),then F is normal on △.