
(/VERSIONCHECK 2) 

(DEFPARAMETER |SquareFreeRegularTriangularSetCategory;CAT| 'NIL) 

(DEFPARAMETER |SquareFreeRegularTriangularSetCategory;AL| 'NIL) 

(DEFUN |SquareFreeRegularTriangularSetCategory| (&REST #1=#:G11838)
  (LET (#2=#:G11839)
    (COND
     ((SETQ #2#
              (|assoc| #3=(|devaluateList| #1#)
                       |SquareFreeRegularTriangularSetCategory;AL|))
      (CDR #2#))
     (T
      (SETQ |SquareFreeRegularTriangularSetCategory;AL|
              (|cons5|
               (CONS #3#
                     (SETQ #2#
                             (APPLY #'|SquareFreeRegularTriangularSetCategory;|
                                    #1#)))
               |SquareFreeRegularTriangularSetCategory;AL|))
      #2#)))) 

(DEFUN |SquareFreeRegularTriangularSetCategory;| (|t#1| |t#2| |t#3| |t#4|)
  (PROG (#1=#:G11837)
    (RETURN
     (PROG1
         (LETT #1#
               (|sublisV|
                (PAIR '(|t#1| |t#2| |t#3| |t#4|)
                      (LIST (|devaluate| |t#1|) (|devaluate| |t#2|)
                            (|devaluate| |t#3|) (|devaluate| |t#4|)))
                (COND (|SquareFreeRegularTriangularSetCategory;CAT|)
                      ('T
                       (LETT |SquareFreeRegularTriangularSetCategory;CAT|
                             (|Join|
                              (|RegularTriangularSetCategory| '|t#1| '|t#2|
                                                              '|t#3| '|t#4|))
                             . #2=(|SquareFreeRegularTriangularSetCategory|)))))
               . #2#)
       (SETELT #1# 0
               (LIST '|SquareFreeRegularTriangularSetCategory|
                     (|devaluate| |t#1|) (|devaluate| |t#2|)
                     (|devaluate| |t#3|) (|devaluate| |t#4|))))))) 
