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(* as published by the Free Software Foundation; either version 2.1   *)
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(*                                                                    *)
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(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the      *)
(* GNU General Public License for more details.                       *)
(*                                                                    *)
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(* 02110-1301 USA                                                     *)
(* conservation de l'invariant de compatibilité par rapport à une signature pour l'union *)

Lemma umpl_conv_1_correct_wrt_sign_invar_0 :
forall (s : state) (sigma : signature) (pa : pre_ad),
state_correct_wrt_sign_with_offset s sigma pa ->
state_correct_wrt_sign_with_offset (umpl_conv_1 s) sigma pa.