added lemmas image_mset_eq_{image_mset_plus,plus,plus_image_mset}D, and multp_image_mset_image_msetD
(* Title: HOL/Library/Code_Target_Numeral.thy
Author: Florian Haftmann, TU Muenchen
*)
section \<open>Implementation of natural and integer numbers by target-language integers\<close>
theory Code_Target_Numeral
imports Code_Target_Int Code_Target_Nat
begin
end