
(DECLAIM (NOTINLINE |AbelianGroup;|)) 

(DEFPARAMETER |AbelianGroup;AL| 'NIL) 

(DEFUN |AbelianGroup| ()
  (COND (|AbelianGroup;AL|) (T (SETQ |AbelianGroup;AL| (|AbelianGroup;|))))) 

(DEFUN |AbelianGroup;| ()
  (SPROG ((#1=#:G691 NIL))
         (PROG1
             (LETT #1#
                   (|Join| (|CancellationAbelianMonoid|)
                           (|mkCategory|
                            '(((- ($ $)) T) ((- ($ $ $)) T)
                              ((* ($ (|Integer|) $)) T))
                            NIL NIL NIL)))
           (SETELT #1# 0 '(|AbelianGroup|))))) 

(MAKEPROP '|AbelianGroup| 'NILADIC T) 
