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-rw-r--r--theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v2
1 files changed, 0 insertions, 2 deletions
diff --git a/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v b/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v
index 3620045d1..547f51b3d 100644
--- a/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v
+++ b/theories/Numbers/Natural/SpecViaZ/NSigNAxioms.v
@@ -229,8 +229,6 @@ Qed.
(** Sqrt *)
-Program Instance sqrt_wd : Proper (eq==>eq) sqrt.
-
Lemma sqrt_spec : forall n, 0<=n ->
(sqrt n)*(sqrt n) <= n /\ n < (succ (sqrt n))*(succ (sqrt n)).
Proof.