def gcd_dvd_left

bend-collections-laws-crypto@1.0.0.0 · proofs/math/natural/gcd.bend:119

import Base
import bend-collections-laws-crypto@1.0.0.0/proofs/lib/nat.bend as N
import bend-collections-laws-crypto@1.0.0.0/src/math/natural.bend as M

119def gcd_dvd_left(+a: Nat, +b: Nat) -> {a == Nat.mul(wl(ws(b, a, b)), M.gcd(a, b)) : Nat}:
120  both_l(a, b, M.gcd(a, b), ws(b, a, b), gcd_both(b, a, b, N.le_refl(b)))