Separation property of positive radial solutions for a general semilinear Elliptic equation

The asymptotic behavior at infinity and an estimate of positive radial solutions of the equation equation(0.1)Δu+∑i=1kcirliuPi=0,    x∈ℝn,are obtained and the structure of separation property of positive radial solutions of Eq. (0.1) with different initial data α is discussed.