diff options
Diffstat (limited to 'theories/Arith/Peano_dec.v')
| -rw-r--r-- | theories/Arith/Peano_dec.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/theories/Arith/Peano_dec.v b/theories/Arith/Peano_dec.v index b17021bc..9ae80d79 100644 --- a/theories/Arith/Peano_dec.v +++ b/theories/Arith/Peano_dec.v @@ -6,7 +6,7 @@ (* * GNU Lesser General Public License Version 2.1 *) (************************************************************************) -(*i $Id: Peano_dec.v 9245 2006-10-17 12:53:34Z notin $ i*) +(*i $Id: Peano_dec.v 9941 2007-07-05 12:42:35Z letouzey $ i*) Require Import Decidable. @@ -23,7 +23,7 @@ Defined. Theorem eq_nat_dec : forall n m, {n = m} + {n <> m}. Proof. - induction n; induction m; auto. + induction n; destruct m; auto. elim (IHn m); auto. Defined. |