Reserved Notation "C 'ᵒᴾ'" (at level 1).
Reserved Notation "F \ a" (at level 20).
Reserved Notation "f >>> g" (at level 45).
+Reserved Notation "a >>≅>> b" (at level 45).
Reserved Notation "a ~~ b" (at level 54).
Reserved Notation "a ~> b" (at level 70, right associativity).
Reserved Notation "a ≃ b" (at level 70, right associativity).