matita/matita/contribs/lambdadelta/ground/relocation/pr_sor_sor_sle.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 include "ground/relocation/pr_sle.ma".
  16 include "ground/relocation/pr_sor.ma".
  17
  18 (* RELATIONAL UNION FOR PARTIAL RELOCATION MAPS *****************************)
  19
  20 (* Main inversions with pr_sle **********************************************)
  21
  22 (*** monotonic_sle_sor *)
  23 axiom pr_sor_monotonic_sle:
  24       ∀f1,g1. f1 ⊆ g1 → ∀f2,g2. f2 ⊆ g2 →
  25       ∀f. f1 ⋓ f2 ≘ f → ∀g. g1 ⋓ g2 ≘ g → f ⊆ g.