diff options
Diffstat (limited to 'contrib7')
| -rw-r--r-- | contrib7/ring/Ring_theory.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/contrib7/ring/Ring_theory.v b/contrib7/ring/Ring_theory.v index db3bc55253..a2af9f2607 100644 --- a/contrib7/ring/Ring_theory.v +++ b/contrib7/ring/Ring_theory.v @@ -325,8 +325,8 @@ Qed. Lemma Th_mult_opp_opp2 : (x,y:A) x*y == (-x)*(-y). Symmetry; Apply Th_mult_opp_opp. Qed. -Lemma Th_opp_zero : -0 == 0. -Rewrite <- (plus_zero_left (-0)). +Lemma Th_opp_zero : - 0 == 0. +Rewrite <- (plus_zero_left (- 0)). Auto. Qed. Lemma Th_plus_reg_left : (n,m,p:A) n + m == n + p -> m==p. |