不稳定型二阶差分方程解的振动性及渐近性

Oscillatory and asymptotic behaviour of unsteady second order difference equation

以具体例子说明了关于二阶差方程Δ（ｒｎΔｘｎ）＋ ｆ（ｎ，ｘｎ）＝ ０ 的一个断言是错误的。

Some examples are used for showing that a statement of equation Δ (r n Δ x n)+f(n,x n) =0 is incorrect and an approximation classification of non oscillatory solutions to the unsteady equation is given.