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• Std/lists/abstract

Element-fix

Generic fixing function for typed list elements.

Definitions and Theorems

Theorem: element-p-of-element-fix

(defthm element-p-of-element-fix
  (implies (element-p (element-example))
           (element-p (element-fix x))))

Theorem: element-fix-when-element-p

(defthm element-fix-when-element-p
  (implies (element-p x)
           (equal (element-fix x) x)))

Theorem: element-fix-idempotent

(defthm element-fix-idempotent
  (equal (element-fix (element-fix x))
         (element-fix x)))