From 69a3ef4490fde85cd618b5df8596ca12199c02fc Mon Sep 17 00:00:00 2001
From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Sun, 4 Oct 2009 14:33:10 +0000
Subject: [PATCH] ...

---
 helm/software/matita/nlibrary/nat/order.ma | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/helm/software/matita/nlibrary/nat/order.ma b/helm/software/matita/nlibrary/nat/order.ma
index fba54a26f..c21cbc64c 100644
--- a/helm/software/matita/nlibrary/nat/order.ma
+++ b/helm/software/matita/nlibrary/nat/order.ma
@@ -42,8 +42,8 @@ nlemma lt_O_Sn: ∀n. lt O (S n).
  #n; napply le_S_S; napply le_O_n.
 nqed. 
 
-ndefinition Nat_: nat → qpowerclass NAT.
- #n; napply mk_qpowerclass
+ndefinition Nat_: nat → ext_powerclass NAT.
+ #n; napply mk_ext_powerclass
   [ napply {m | m < n}
   | #x; #x'; #H; nrewrite < H; napply mk_iff; #K; nassumption (* refl non va *) ]
 nqed.
-- 
2.39.2