
(DEFPARAMETER |MultivariateSkewPolynomialCategory;CAT| 'NIL) 

(DECLAIM (NOTINLINE |MultivariateSkewPolynomialCategory;|)) 

(DEFPARAMETER |MultivariateSkewPolynomialCategory;AL| 'NIL) 

(DEFUN |MultivariateSkewPolynomialCategory| (|t#1| |t#2| |t#3|)
  (LET (#1=#:G1
        (#2=#:G2
         (LIST (|devaluate| |t#1|) (|devaluate| |t#2|) (|devaluate| |t#3|))))
    (COND
     ((SETQ #1# (|assoc| #2# |MultivariateSkewPolynomialCategory;AL|))
      (CDR #1#))
     (T
      (SETQ |MultivariateSkewPolynomialCategory;AL|
              (|cons5|
               (CONS #2#
                     (SETQ #1#
                             (APPLY #'|MultivariateSkewPolynomialCategory;|
                                    #2#)))
               |MultivariateSkewPolynomialCategory;AL|))
      #1#)))) 

(DEFUN |MultivariateSkewPolynomialCategory;| (|t#1| |t#2| |t#3|)
  (SPROG ((#1=#:G0 NIL))
         (PROG1
             (LETT #1#
                   (|subst_in_cat| '(|t#1| |t#2| |t#3|)
                                   (LIST |t#1| |t#2| |t#3|)
                                   (COND
                                    (|MultivariateSkewPolynomialCategory;CAT|)
                                    ('T
                                     (LETT
                                      |MultivariateSkewPolynomialCategory;CAT|
                                      (|Join|
                                       (|MaybeSkewPolynomialCategory| '|t#1|
                                                                      '|t#2|
                                                                      '|t#3|)))))))
           (SETELT #1# 0
                   (LIST '|MultivariateSkewPolynomialCategory| |t#1| |t#2|
                         |t#3|))))) 
