def Perm.self

bend-collections-laws-math@1.0.0.0 · spec/math/natural.bend:188

import Base
import bend-collections-laws-math@1.0.0.0/src/math/natural.bend as M

188def Perm.self(+n: Nat) -> Type:
189  {M.perm(n, n) == factorial(n) : Nat}