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    • Outcome-list

    Outcome-list-equiv

    Basic equivalence relation for outcome-list structures.

    Definitions and Theorems

    Function: outcome-list-equiv$inline

    (defun outcome-list-equiv$inline (acl2::x acl2::y)
      (declare (xargs :guard (and (outcome-listp acl2::x)
                                  (outcome-listp acl2::y))))
      (equal (outcome-list-fix acl2::x)
             (outcome-list-fix acl2::y)))

    Theorem: outcome-list-equiv-is-an-equivalence

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

    Theorem: outcome-list-equiv-implies-equal-outcome-list-fix-1

    (defthm outcome-list-equiv-implies-equal-outcome-list-fix-1
      (implies (outcome-list-equiv acl2::x x-equiv)
               (equal (outcome-list-fix acl2::x)
                      (outcome-list-fix x-equiv)))
      :rule-classes (:congruence))

    Theorem: outcome-list-fix-under-outcome-list-equiv

    (defthm outcome-list-fix-under-outcome-list-equiv
      (outcome-list-equiv (outcome-list-fix acl2::x)
                          acl2::x)
      :rule-classes (:rewrite :rewrite-quoted-constant))

    Theorem: equal-of-outcome-list-fix-1-forward-to-outcome-list-equiv

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

    Theorem: equal-of-outcome-list-fix-2-forward-to-outcome-list-equiv

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

    Theorem: outcome-list-equiv-of-outcome-list-fix-1-forward

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

    Theorem: outcome-list-equiv-of-outcome-list-fix-2-forward

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