數學中星號是什么意思？

數學符號里面，我們可以看到有一個星星符號，這種符號也是比較常見的符號，今天我們就一起來認識一下這個數學符號，通過這個星星符號也了解一下數學

1：數學里面的星星符號，可以表示為乘于符號，這也是大家都比較熟悉的符號，例于4*4=16 ，也就是4乘于4等于16

2：數學的星星符號也是用于集合的符號，里面于面的例子

應用在正則表達式

Kleene 星號應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 星號應用于集合的例子：

{'a','b','c'}* = {ε,"a","b","c","aa","ab","ac","ba","bb","bc",...}