
(/VERSIONCHECK 2) 

(DEFPARAMETER |OrderedAbelianSemiGroup;AL| 'NIL) 

(DEFUN |OrderedAbelianSemiGroup| ()
  (LET (#:G1817)
    (COND
      (|OrderedAbelianSemiGroup;AL|)
      (T (SETQ |OrderedAbelianSemiGroup;AL|
               (|OrderedAbelianSemiGroup;|)))))) 

(DEFUN |OrderedAbelianSemiGroup;| ()
  (PROG (#0=#:G1815)
    (RETURN
      (PROG1 (LETT #0# (|Join| (|OrderedSet|) (|AbelianSemiGroup|))
                   |OrderedAbelianSemiGroup|)
        (SETELT #0# 0 '(|OrderedAbelianSemiGroup|)))))) 

(MAKEPROP '|OrderedAbelianSemiGroup| 'NILADIC T) 
