ProofNat.add_comm: law of lawful-words@0.1.0.0 Import: import lawful-words@0.1.0.0/proof_nat.bend as ProofNat Lines 218-221 of lawful-words@0.1.0.0/proof_nat.bend: https://jend.leeeet.dev/read.txt?path=lawful-words@0.1.0.0/proof_nat.bend&start_line=218&end_line=221 import Base law add_comm: for +a: Nat for +b: Nat {Nat.add(a, b) == Nat.add(b, a) : Nat} Uses (5): https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.add https://jend.leeeet.dev/definition.txt?path=lawful-words@0.1.0.0/proof_nat.bend&name=add_succ https://jend.leeeet.dev/definition.txt?path=lawful-words@0.1.0.0/proof_nat.bend&name=add_zero