1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 notation "hvbox (r \sub \c)" with precedence 90 for @{'concr_rel $r}.
16 notation "hvbox (r \sub \f)" with precedence 90 for @{'form_rel $r}.
18 definition hide ≝ λA:Type.λx:A.x.
20 interpretation "hide" 'hide x = (hide _ x).