Word.add_comm: law of Base
Import: import Base
Lines 1425-1429 of Base/base.bend: https://jend.leeeet.dev/read.txt?path=Base/base.bend&start_line=1425&end_line=1429

import Base

law Word.add_comm:
  for n: Nat
  for a: Word(n)
  for b: Word(n)
  {Word.add(n, a, b) == Word.add(n, b, a) : Word(n)}

Uses (5):
  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=Word
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Word.add_comm.go