NatOrder.equal_symmetric: def of stelliferous@0.0.2.0
Import: import stelliferous@0.0.2.0/proofs/nat_order.bend as NatOrder
Lines 119-124 of stelliferous@0.0.2.0/proofs/nat_order.bend: https://jend.leeeet.dev/read.txt?path=stelliferous@0.0.2.0/proofs/nat_order.bend&start_line=119&end_line=124

import Base

def equal_symmetric(+left: Nat,+right: Nat) -> {Nat.is_eq(left,right) == Nat.is_eq(right,left) : Bool}:
  match left right:
    case 0n 0n: {==}
    case 0n 1n+right: {==}
    case 1n+left 0n: {==}
    case 1n+left 1n+right: equal_symmetric(left,right)

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_eq