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(/VERSIONCHECK 2)
(DEFPARAMETER |CancellationAbelianMonoid;AL| 'NIL)
(DEFUN |CancellationAbelianMonoid;| ()
(LET ((#0=#:G1372
(|Join| (|AbelianMonoid|)
(|mkCategory| '|domain|
'(((|subtractIfCan| ((|Union| $ "failed") $ $))
T))
NIL 'NIL NIL))))
(SETF (|shellEntry| #0# 0) '(|CancellationAbelianMonoid|))
#0#))
(DEFUN |CancellationAbelianMonoid| ()
(COND
(|CancellationAbelianMonoid;AL|)
(T (SETQ |CancellationAbelianMonoid;AL|
(|CancellationAbelianMonoid;|)))))
(MAKEPROP '|CancellationAbelianMonoid| 'NILADIC T)
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