def minimum_right

stelliferous@0.0.2.0 · proofs/nat_extrema.bend:44

import Base
import stelliferous@0.0.2.0/proofs/nat_order.bend as Order

44def minimum_right(+left: Nat,+right: Nat) -> {Nat.is_le(Nat.min(left,right),right) == True{} : Bool}:
45  match left right:
46    case 0n right: Order.zero_le(right)
47    case 1n+left 0n: {==}
48    case 1n+left 1n+right: minimum_right(left,right)