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• Tyspecseq

Tyspecseq-equiv

Basic equivalence relation for tyspecseq structures.

Definitions and Theorems

Function: tyspecseq-equiv$inline

(defun tyspecseq-equiv$inline (acl2::x acl2::y)
  (declare (xargs :guard (and (tyspecseqp acl2::x)
                              (tyspecseqp acl2::y))))
  (equal (tyspecseq-fix acl2::x)
         (tyspecseq-fix acl2::y)))

Theorem: tyspecseq-equiv-is-an-equivalence

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

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

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

Theorem: tyspecseq-fix-under-tyspecseq-equiv

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

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

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

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

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

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

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

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

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