removing old contribs

[helm.git] / helm / software / matita / contribs / RELATIONAL / NLE / props.ma

diff --git a/helm/software/matita/contribs/RELATIONAL/NLE/props.ma b/helm/software/matita/contribs/RELATIONAL/NLE/props.ma
index 1eb0455fe94ca8d5da93f32be17d397275e71cc7..ba563b7af941c80e46916fe3b532b0b0652c2283 100644 (file)
--- a/helm/software/matita/contribs/RELATIONAL/NLE/props.ma
+++ b/helm/software/matita/contribs/RELATIONAL/NLE/props.ma
@@ -16,11 +16,11 @@
 
 include "NLE/order.ma".
 
-theorem nle_trans_succ: \forall x,y. x <= y \to x <= succ y.
- intros. elim H; clear H x y; autobatch.
+theorem nle_trans_succ: ∀x,y. x ≤ y → x ≤ succ y.
+ intros; elim H; clear H x y; autobatch.
 qed.
 
-theorem nle_gt_or_le: \forall x, y. y > x \lor y <= x.
+theorem nle_gt_or_le: ∀x, y. y > x ∨ y ≤ x.
  intros 2; elim y; clear y;
  [ autobatch
  | decompose;