
(/VERSIONCHECK 2) 

(DEFPARAMETER |OrderedSemiGroup;AL| 'NIL) 

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

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

(MAKEPROP '|OrderedSemiGroup| 'NILADIC T) 
