def Egcd.bezout
import bend-collections-laws-math@1.0.0.0/spec/math/number.bend as Numberimport Base
import bend-collections-laws-math@1.0.0.0/src/math/number.bend as NB
62def Egcd.bezout(+a: Nat, +b: Nat) -> Type:
63 {eg_pos(a, b, NB.egcd(a, b)) == eg_neg(a, b, NB.egcd(a, b)) : Nat}