BendMlNatLemmas.product_append: law of bend-ml-nat-lemmas@0.1.2.0
Import: import bend-ml-nat-lemmas@0.1.2.0/main.bend as BendMlNatLemmas
Lines 273-276 of bend-ml-nat-lemmas@0.1.2.0/main.bend: https://jend.leeeet.dev/read.txt?path=bend-ml-nat-lemmas@0.1.2.0/main.bend&start_line=273&end_line=276

import Base

law product_append:
  for +xs: List<&2, Nat>
  for +ys: List<&2, Nat>
  {product(List.append(&2, Nat, xs, ys)) == Nat.mul(product(xs), product(ys)) : Nat}

Uses (8):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.append
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.mul
  https://jend.leeeet.dev/definition.txt?path=bend-ml-nat-lemmas@0.1.2.0/main.bend&name=mul_assoc
  https://jend.leeeet.dev/definition.txt?path=bend-ml-nat-lemmas@0.1.2.0/main.bend&name=mul_one_l
  https://jend.leeeet.dev/definition.txt?path=bend-ml-nat-lemmas@0.1.2.0/main.bend&name=product