matita/matita/contribs/lambda_delta/Ground_2/notation.ma

   1 (**************************************************************************)
   2 (*       ___                                                              *)
   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
   5 (*      ||T||                                                             *)
   6 (*      ||I||       Developers:                                           *)
   7 (*      ||T||         The HELM team.                                      *)
   8 (*      ||A||         http://helm.cs.unibo.it                             *)
   9 (*      \   /                                                             *)
  10 (*       \ /        This file is distributed under the terms of the       *)
  11 (*        v         GNU General Public License Version 2                  *)
  12 (*                                                                        *)
  13 (**************************************************************************)
  14
  15 (* GENERAL NOTATION USED BY THE FORMAL SYSTEM λδ ****************************)
  16
  17 (* Lists ********************************************************************)
  18
  19 notation "hvbox( ◊ )"
  20   non associative with precedence 90
  21   for @{'Nil}.
  22
  23 notation "hvbox( hd :: break tl )"
  24   right associative with precedence 47
  25   for @{'Cons $hd $tl}.
  26
  27 notation "hvbox( l1 @ break l2 )"
  28   right associative with precedence 47
  29   for @{'Append $l1 $l2 }.
  30
  31 notation "hvbox( ⟠ )"
  32   non associative with precedence 90
  33   for @{'Nil2}.
  34
  35 notation "hvbox( { hd1 , break hd2 } :: break tl )"
  36   non associative with precedence 47
  37   for @{'Cons $hd1 $hd2 $tl}.