diff options
Diffstat (limited to 'theories/Reals/R_sqrt.v')
| -rw-r--r-- | theories/Reals/R_sqrt.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/theories/Reals/R_sqrt.v b/theories/Reals/R_sqrt.v index 2d9419bdf..19e111f23 100644 --- a/theories/Reals/R_sqrt.v +++ b/theories/Reals/R_sqrt.v @@ -37,8 +37,8 @@ Lemma sqrt_sqrt : forall x:R, 0 <= x -> sqrt x * sqrt x = x. Proof. intros. unfold sqrt. - case (Rcase_abs x); intro. - elim (Rlt_irrefl _ (Rlt_le_trans _ _ _ r H)). + case (Rcase_abs x) as [Hlt|Hge]. + elim (Rlt_irrefl _ (Rlt_le_trans _ _ _ Hlt H)). rewrite Rsqrt_Rsqrt; reflexivity. Qed. |