@@ -34,6 +34,8 @@ record ProtoMetric a ℓ : Set (suc (a ⊔ ℓ)) where
3434 d : DistanceFunction Carrier
3535 isProtoMetric : IsProtoMetric _≈_ d
3636
37+ infix 4 _≈_
38+
3739 open IsProtoMetric isProtoMetric public
3840
3941------------------------------------------------------------------------
@@ -46,6 +48,8 @@ record PreMetric a ℓ : Set (suc (a ⊔ ℓ)) where
4648 d : DistanceFunction Carrier
4749 isPreMetric : IsPreMetric _≈_ d
4850
51+ infix 4 _≈_
52+
4953 open IsPreMetric isPreMetric public
5054
5155 protoMetric : ProtoMetric a ℓ
@@ -63,6 +67,8 @@ record QuasiSemiMetric a ℓ : Set (suc (a ⊔ ℓ)) where
6367 d : DistanceFunction Carrier
6468 isQuasiSemiMetric : IsQuasiSemiMetric _≈_ d
6569
70+ infix 4 _≈_
71+
6672 open IsQuasiSemiMetric isQuasiSemiMetric public
6773
6874 preMetric : PreMetric a ℓ
@@ -83,6 +89,8 @@ record SemiMetric a ℓ : Set (suc (a ⊔ ℓ)) where
8389 d : DistanceFunction Carrier
8490 isSemiMetric : IsSemiMetric _≈_ d
8591
92+ infix 4 _≈_
93+
8694 open IsSemiMetric isSemiMetric public
8795
8896 quasiSemiMetric : QuasiSemiMetric a ℓ
@@ -103,6 +111,8 @@ record Metric a ℓ : Set (suc (a ⊔ ℓ)) where
103111 d : DistanceFunction Carrier
104112 isMetric : IsMetric _≈_ d
105113
114+ infix 4 _≈_
115+
106116 open IsMetric isMetric public
107117
108118 semiMetric : SemiMetric a ℓ
@@ -123,6 +133,8 @@ record UltraMetric a ℓ : Set (suc (a ⊔ ℓ)) where
123133 d : DistanceFunction Carrier
124134 isUltraMetric : IsUltraMetric _≈_ d
125135
136+ infix 4 _≈_
137+
126138 open IsUltraMetric isUltraMetric public
127139
128140 semiMetric : SemiMetric a ℓ
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