def choose_zero_right

bend-collections-laws-math@1.0.0.0 · proofs/math/natural/fact.bend:121

import Base
import bend-collections-laws-math@1.0.0.0/spec/math/natural.bend as S

121def choose_zero_right(+n: Nat) -> {S.choose(n, 0n) == 1n : Nat}:
122  match n:
123    case 0n:
124      {==}
125    case 1n+m:
126      {==}