Filtering...

lambda-closedp

books/std/system/lambda-closedp

Included Books

pseudo-lambdap all-vars
other
(in-package "ACL2")
include-book
(include-book "pseudo-lambdap")
local
(local (include-book "std/system/all-vars" :dir :system))
other
(define lambda-closedp
  ((lambd pseudo-lambdap))
  :returns (yes/no booleanp)
  :parents (std/system/term-queries)
  :short "Check if a lambda expression is closed,
          i.e. it has no free variables."
  (subsetp-eq (all-vars (lambda-body lambd))
    (lambda-formals lambd))
  :guard-hints (("Goal" :in-theory (enable pseudo-lambdap))))