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(* modify it under the terms of the GNU Lesser General Public License *)
(* as published by the Free Software Foundation; either version 2.1   *)
(* of the License, or (at your option) any later version.             *)
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(* but WITHOUT ANY WARRANTY; without even the implied warranty of     *)
(* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the      *)
(* GNU General Public License for more details.                       *)
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(* 02110-1301 USA                                                     *)
Axiom
typest_writing :
forall t t' : type,
typest t t' -> capst (getcap t') Write -> typest (getobj t') (getobj t).
Axiom
typest_reading :
forall t t' : type,
typest t t' -> capst (getcap t') Read -> typest (getobj t) (getobj t').
Axiom
typest_tail :
forall t t' : type, typest t t' -> capst (getcap t) (getcap t').

Theorem est_refl : forall G : env, envst G G.