数学符号里面,我们可以看到有一个星星符号,这种符号也是比较常见的符号,今天我们就一起来认识一下这个数学符号,通过这个星星符号也了解一下数学
1:数学里面的星星符号,可以表示为乘于符号,这也是大家都比较熟悉的符号,例于4*4=16 ,也就是4乘于4等于16
2:数学的星星符号也是用于集合的符号,里面于面的例子
应用在正则表达式
Kleene 星号应用於字符串集合的例子:
{"ab","c"}* = {ε,"ab","c","abab","abc","cab","cc","ababab","ababc","abcab","abcc","cabab","cabc","ccab","ccc",...}
Kleene 星号应用于集合的例子:
{'a','b','c'}* = {ε,"a","b","c","aa","ab","ac","ba","bb","bc",...}
在线网名符号工具