LAWS.count_atoms_append: law of bend-prot@0.1.0.0
Import: import bend-prot@0.1.0.0/LAWS.bend as LAWS
Lines 339-343 of bend-prot@0.1.0.0/LAWS.bend: https://jend.leeeet.dev/read.txt?path=bend-prot@0.1.0.0/LAWS.bend&start_line=339&end_line=343

import Base
import bend-prot@0.1.0.0/protein.bend as P

# Counting an append splits into the counts.
law count_atoms_append:
  for xs: List<&2, P.Atom>
  for ys: List<&2, P.Atom>
  {P.count_atoms(P.append_atoms(xs, ys)) == Nat.add(P.count_atoms(xs), P.count_atoms(ys)) : Nat}

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  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=bend-prot@0.1.0.0/protein.bend&name=Atom
  https://jend.leeeet.dev/definition.txt?path=bend-prot@0.1.0.0/protein.bend&name=append_atoms
  https://jend.leeeet.dev/definition.txt?path=bend-prot@0.1.0.0/protein.bend&name=count_atoms