摘要
本文考察复变函数,(?)(r∈Z,l=2,x_j∈C)的罗朗(Laurent)展武,应用留数定理给出一个代数恒等式,由此再给出一类关于组合数的恒等式。本文的方法为研究组合数学提供又一途径。
In this paper,we'll study the Laurent expansion of the function of the complex variables as fol- lows: (?) give a group of algebric identities applying the residue theorem,and then on this base give a group of identities about combinational number,So we can find another method of studying Combinatorial Mathematics.
