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• Lstmt-gout

Lstmt-gout-equiv

Basic equivalence relation for lstmt-gout structures.

Definitions and Theorems

Function: lstmt-gout-equiv$inline

(defun lstmt-gout-equiv$inline (acl2::x acl2::y)
  (declare (xargs :guard (and (lstmt-goutp acl2::x)
                              (lstmt-goutp acl2::y))))
  (equal (lstmt-gout-fix acl2::x)
         (lstmt-gout-fix acl2::y)))

Theorem: lstmt-gout-equiv-is-an-equivalence

(defthm lstmt-gout-equiv-is-an-equivalence
  (and (booleanp (lstmt-gout-equiv x y))
       (lstmt-gout-equiv x x)
       (implies (lstmt-gout-equiv x y)
                (lstmt-gout-equiv y x))
       (implies (and (lstmt-gout-equiv x y)
                     (lstmt-gout-equiv y z))
                (lstmt-gout-equiv x z)))
  :rule-classes (:equivalence))

Theorem: lstmt-gout-equiv-implies-equal-lstmt-gout-fix-1

(defthm lstmt-gout-equiv-implies-equal-lstmt-gout-fix-1
  (implies (lstmt-gout-equiv acl2::x x-equiv)
           (equal (lstmt-gout-fix acl2::x)
                  (lstmt-gout-fix x-equiv)))
  :rule-classes (:congruence))

Theorem: lstmt-gout-fix-under-lstmt-gout-equiv

(defthm lstmt-gout-fix-under-lstmt-gout-equiv
  (lstmt-gout-equiv (lstmt-gout-fix acl2::x)
                    acl2::x)
  :rule-classes (:rewrite :rewrite-quoted-constant))

Theorem: equal-of-lstmt-gout-fix-1-forward-to-lstmt-gout-equiv

(defthm equal-of-lstmt-gout-fix-1-forward-to-lstmt-gout-equiv
  (implies (equal (lstmt-gout-fix acl2::x) acl2::y)
           (lstmt-gout-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: equal-of-lstmt-gout-fix-2-forward-to-lstmt-gout-equiv

(defthm equal-of-lstmt-gout-fix-2-forward-to-lstmt-gout-equiv
  (implies (equal acl2::x (lstmt-gout-fix acl2::y))
           (lstmt-gout-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: lstmt-gout-equiv-of-lstmt-gout-fix-1-forward

(defthm lstmt-gout-equiv-of-lstmt-gout-fix-1-forward
  (implies (lstmt-gout-equiv (lstmt-gout-fix acl2::x)
                             acl2::y)
           (lstmt-gout-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)

Theorem: lstmt-gout-equiv-of-lstmt-gout-fix-2-forward

(defthm lstmt-gout-equiv-of-lstmt-gout-fix-2-forward
  (implies (lstmt-gout-equiv acl2::x (lstmt-gout-fix acl2::y))
           (lstmt-gout-equiv acl2::x acl2::y))
  :rule-classes :forward-chaining)