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-rw-r--r--theories/Numbers/Integer/Abstract/ZAxioms.v2
-rw-r--r--theories/Numbers/Integer/Abstract/ZBase.v6
2 files changed, 4 insertions, 4 deletions
diff --git a/theories/Numbers/Integer/Abstract/ZAxioms.v b/theories/Numbers/Integer/Abstract/ZAxioms.v
index dfffe9a7f..bd6db10d9 100644
--- a/theories/Numbers/Integer/Abstract/ZAxioms.v
+++ b/theories/Numbers/Integer/Abstract/ZAxioms.v
@@ -48,7 +48,7 @@ Parameter Zopp : Z -> Z.
(*Notation "- 1" := (Zopp 1) : IntScope.
Check (-1).*)
-Add Morphism Zopp with signature Zeq ==> Zeq as Zopp_wd.
+Instance Zopp_wd : Proper (Zeq==>Zeq) Zopp.
Notation "- x" := (Zopp x) (at level 35, right associativity) : IntScope.
Notation "- 1" := (Zopp (NZsucc NZ0)) : IntScope.
diff --git a/theories/Numbers/Integer/Abstract/ZBase.v b/theories/Numbers/Integer/Abstract/ZBase.v
index 648cde197..7b3c0ba6e 100644
--- a/theories/Numbers/Integer/Abstract/ZBase.v
+++ b/theories/Numbers/Integer/Abstract/ZBase.v
@@ -34,13 +34,13 @@ Theorem Zpred_succ : forall n : Z, P (S n) == n.
Proof NZpred_succ.
Theorem Zeq_refl : forall n : Z, n == n.
-Proof (proj1 NZeq_equiv).
+Proof (@Equivalence_Reflexive _ _ NZeq_equiv).
Theorem Zeq_sym : forall n m : Z, n == m -> m == n.
-Proof (proj2 (proj2 NZeq_equiv)).
+Proof (@Equivalence_Symmetric _ _ NZeq_equiv).
Theorem Zeq_trans : forall n m p : Z, n == m -> m == p -> n == p.
-Proof (proj1 (proj2 NZeq_equiv)).
+Proof (@Equivalence_Transitive _ _ NZeq_equiv).
Theorem Zneq_sym : forall n m : Z, n ~= m -> m ~= n.
Proof NZneq_sym.