数学范畴中,所谓分类,一般是把所研究的数学对象按照一定的标准分成几部分进行求解.通过分类,往往可以把一个复杂的不确定的数学问题分解为若干个简单的相对稳定的子问题,从而使问题得到解决. In the category of mathematics, the so-called classification is generally to divide the studied mathematical objects into several parts according to a certain standard. Through classification, a complex and uncertain mathematical problem can often be decomposed into a number of simple and relatively stable subproblems. So that the problem can be solved.