组合数学是研究离散对象的科学，正因为有了以组合数学为基础的组合算法，才使人感到计算机好像是有思维的。
It is the combinatorial algorithms which based on a science of studying discrete objects, Combinatorics, that make people feel that computer may have its own thought.
母函数在组合数学中有着重要的地位，是解决组合问题的强有力的工具。
Master function has an important status in combinatorics. It is a powerful tool in solving combinatorics problems.
组合恒等式在组合数学中占有重要的地位，它有多种证法，运用集合论的观点，求导法则和概率方法对几个重要的组合等式给出了直观简洁的证明。
This paper USES the set theory, derivation principles and probability method to give a direct and simple solution to several important combinatorial identities.
组合恒等式在组合数学中占有重要的地位，它有多种证法，运用集合论的观点，求导法则和概率方法对几个重要的组合等式给出了直观简洁的证明。
This paper USES the set theory, derivation principles and probability method to give a direct and simple solution to several important combinatorial identities.
应用推荐