arith3 http://www.openmath.org/cd/arith3.ocd 2006-06-01 2004-06-01 1 2 experimental arith3 Extended GCD extended_gcd The symbol represents the n-ary function, a_1,...,a_n to return a list consisting of the gcd (greatest common divisor) of its arguments, together with n elements x_1,...,x_n such that gcd(a_1,...,a_n)=x_1 a_1+...+x_n a_n 6 10 15 1 1 -2 1