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(/VERSIONCHECK 2)
(DEFPARAMETER |CommutativeRing;AL| 'NIL)
(DEFUN |CommutativeRing;| ()
(PROG (#0=#:G1397)
(RETURN
(PROG1 (LETT #0#
(|Join| (|Ring|) (|BiModule| '$ '$)
(|mkCategory| '|package| NIL
'(((|commutative| "*") T)) 'NIL NIL))
|CommutativeRing|)
(SETELT #0# 0 '(|CommutativeRing|))))))
(DEFUN |CommutativeRing| ()
(LET ()
(COND
(|CommutativeRing;AL|)
(T (SETQ |CommutativeRing;AL| (|CommutativeRing;|))))))
(SETQ |$CategoryFrame|
(|put| '|CommutativeRing| '|isCategory| T
(|addModemap| '|CommutativeRing| '(|CommutativeRing|)
'((|Category|)) T '|CommutativeRing| |$CategoryFrame|)))
(MAKEPROP '|CommutativeRing| 'NILADIC T)
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