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Svex

Svex-equiv

Basic equivalence relation for svex structures.

Definitions and Theorems

Function: svex-equiv$inline

(defun svex-equiv$inline (x y)
  (declare (xargs :guard (and (svex-p x) (svex-p y))))
  (equal (svex-fix x) (svex-fix y)))

Theorem: svex-equiv-is-an-equivalence

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

Theorem: svex-equiv-implies-equal-svex-fix-1

(defthm svex-equiv-implies-equal-svex-fix-1
  (implies (svex-equiv x x-equiv)
           (equal (svex-fix x) (svex-fix x-equiv)))
  :rule-classes (:congruence))

Theorem: svex-fix-under-svex-equiv

(defthm svex-fix-under-svex-equiv
  (svex-equiv (svex-fix x) x)
  :rule-classes (:rewrite :rewrite-quoted-constant))

Theorem: equal-of-svex-fix-1-forward-to-svex-equiv

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

Theorem: equal-of-svex-fix-2-forward-to-svex-equiv

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

Theorem: svex-equiv-of-svex-fix-1-forward

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

Theorem: svex-equiv-of-svex-fix-2-forward

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