diff options
| author |  barras <barras@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2006-09-26 11:18:22 +0000 |
|---|---|---|
| committer | barras <barras@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2006-09-26 11:18:22 +0000 |
| commit | 351a500eada776832ac9b09657e42f5d6cd7210f (patch) | |
| tree | af45a745540e1154eab8955c17e03cbbe2e6b878 /theories/Reals/Rgeom.v | |
| parent | 5155de9ee4bd01127a57c36cebbd01c5d903d048 (diff) | |
mise a jour du nouveau ring et ajout du nouveau field, avant renommages
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@9178 85f007b7-540e-0410-9357-904b9bb8a0f7
Diffstat (limited to 'theories/Reals/Rgeom.v')
| -rw-r--r-- | theories/Reals/Rgeom.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/theories/Reals/Rgeom.v b/theories/Reals/Rgeom.v index e7858a18f..5e953d94c 100644 --- a/theories/Reals/Rgeom.v +++ b/theories/Reals/Rgeom.v @@ -146,7 +146,7 @@ intros; unfold xr, yr in |- *; (- x1 * sin theta + y1 * cos theta - (- x2 * sin theta + y2 * cos theta)) with (cos theta * (y1 - y2) + sin theta * (x2 - x1)); [ repeat rewrite Rsqr_plus; repeat rewrite Rsqr_mult; repeat rewrite cos2; - ring; replace (x2 - x1) with (- (x1 - x2)); + ring_simplify; replace (x2 - x1) with (- (x1 - x2)); [ rewrite <- Rsqr_neg; ring | ring ] | ring ] | ring ]. @@ -184,4 +184,4 @@ Lemma isometric_trans_rot : Rsqr (xt (xr x1 y1 theta) tx - xt (xr x2 y2 theta) tx) + Rsqr (yt (yr x1 y1 theta) ty - yt (yr x2 y2 theta) ty). intros; rewrite <- isometric_translation; apply isometric_rotation_0. -Qed.
\ No newline at end of file +Qed. |