RECIP defines the specialization of the multiplicative inverse operator for scalar-quantities.
(=> (And (Scalar-Quantity ?X) (Recip ?X ?Y))
(And (Scalar-Quantity ?Y)
(Forall (?Dim)
(=> (/= ?X (The-Zero-Scalar-For-Dimension ?Dim))
(= (* ?X ?Y) Identity-Scalar)))))