(<=> (Integral-Domain ?Domain ?Plus-Op ?Zero-Id ?Mult-Op ?One-Id)
(And (Commutative-Ring ?Domain
?Plus-Op
?Zero-Id
?Mult-Op
?One-Id)
(Binary-Operator-On ?Mult-Op
(Kappa (?X)
(And (Instance-Of ?X ?Domain)
(/= ?X ?Zero-Id))))))