建立了由函数恒等式所导出的函数项级数的求和定理，并给出了具体应用的实例。
A theorem for the summation of series expressed by function terms derived from function identities is established. Some examples in practical application are given.
reduce函数是一个恒等函数，它只负责把中间数据发送到输出文件。
The reduce function is an identity function that just copies the supplied intermediate data to the output.
利用初等方法及拉盖尔多项式的生成函数给出一类包含拉盖尔多项式的恒等式。
The main purpose of this paper is using the element ary method and the generating function of Laguerre's Polynomials to give some id entities involving Laguerre's Polynomials.
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