matita/matita/contribs/lambdadelta/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 (* Logic ********************************************************************)
  18
  19 notation "⊥"
  20   non associative with precedence 90
  21   for @{'false}.
  22
  23 notation "⊤"
  24   non associative with precedence 90
  25   for @{'true}.
  26
  27 (* Lists ********************************************************************)
  28
  29 notation "◊"
  30   non associative with precedence 90
  31   for @{'Nil}.
  32
  33 notation "hvbox( hd @ break tl )"
  34   right associative with precedence 47
  35   for @{'Cons $hd $tl}.
  36
  37 notation "hvbox( l1 @@ break l2 )"
  38   right associative with precedence 47
  39   for @{'Append $l1 $l2 }.
  40
  41 notation "⟠"
  42   non associative with precedence 90
  43   for @{'Nil2}.
  44
  45 notation "hvbox( { hd1 , break hd2 } @ break tl )"
  46   non associative with precedence 47
  47   for @{'Cons $hd1 $hd2 $tl}.