1、对于正整数a,b存在整数x,y使得gcd(a,b)=ax+by 2、整数a,b互质的充要条件是存在整数x,y使得ax+by=1 1970-01-01T08:00:00+08:00 Typecho https://www.ciyekua.cn/index.php/feed/atom/diary/166.html