Let the function f(z)=z+sum from n=2 to ∞ a_nz^n ∈ S. It is obtained that-2.793【|a_n+1|-|a_n|【3.26,which is an improvement of the result in [1] or [2].
文摘Let the function f(z)=z+sum from n=2 to ∞ a_nz^n ∈ S. It is obtained that-2.793【|a_n+1|-|a_n|【3.26,which is an improvement of the result in [1] or [2].
