Poisson分布的特征

证明了满足EX =DX <∞的具有非退化分布的母体X服从Poisson分布的充要条件是T2 -T1关于T1有常回归 ,其中T1= X =1n∑ni =1Xi,T2 =1n- 1∑ni =1(Xi- X) 2

一类Poisson型分布的特征

证明了满足EX2 <∞的具有非退化分布的母体X服从Poisson型分布P(λ ,α ,1)的充要条件是T2 -T1关于T1有常回归 ,其中T1= X =1n ∑ni =1Xi,T2 =1n - 1∑ni=1(Xi- X) 2

Solutions of the Schrdinger Equation for PT-Symmetric Coupled Quintic Potentials in Two Dimensions

This paper deals with the solutions of time independent Schrodinger wave equation for a two-dimensional PT-symmetric coupled quintic potential in its most general form. Employing wavefunction ansatz method, general analytic expressions for eigenvalues and eigenfunctions for first four states are obtained. Solutions of a particular case are also presented.