关于微分多项式f^2(f^(k))~2-1的零点

On the Zeros of the Differential Polynomial f^2(f^(k))~2-1

利用精简计数函数证明了一个关于f^2(f^(k))~2-1的定量估计不等式,这里f是一个超越亚纯函数,得到了ff^(k)的值分布的定量结果,改进了已有结果 .

In this paper, the value distribution of the differential polynomials f^2（f^（k））^2-1, where f is a transcendental meromorphic function, was proved by using the reduced counting function. The value of ff^（k） was obtained, which improved the existing result.