Posted 2019-07-13Updated 2019-07-13Math Mixina few seconds read (About 30 words)0 visits函数说明约定 I:示性/指示函数 满足条件时取1,否则取0 sign:符号函数 >0:取1 <0:取-1 函数说明https://xyy15926.github.io/Math-Mixin/README.htmlAuthorUBeaRLyPosted on2019-07-13Updated on2019-07-13Licensed under#MathREADME