matita/contribs/dama/dama/constructive_pointfree/lebesgue.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
  16
  17 include "metric_lattice.ma".
  18 include "sequence.ma".
  19 include "constructive_connectives.ma".
  20
  21 (* Section 3.2 *)
  22
  23 (* 3.21 *)
  24
  25
  26 (* 3.17 *)
  27
  28
  29 (* 3.20 *)
  30 lemma uniq_sup: ∀O:ogroup.∀s:sequence O.∀x,y:O. is_sup ? s x → is_sup ? s y → x ≈ y.
  31 intros;