
(/VERSIONCHECK 2) 

(DEFPARAMETER |SemiRing;AL| 'NIL) 

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

(DEFUN |SemiRing;| ()
  (PROG (#0=#:G1815)
    (RETURN
      (PROG1 (LETT #0# (|Join| (|SemiRng|) (|Monoid|)) |SemiRing|)
        (SETELT #0# 0 '(|SemiRing|)))))) 

(MAKEPROP '|SemiRing| 'NILADIC T) 
