src/HOL/Enum.thy
changeset 46358 b2a936486685
parent 46357 2795607a1f40
child 46359 9bc43dc49d0a
     1.1 --- a/src/HOL/Enum.thy	Mon Jan 30 13:55:20 2012 +0100
     1.2 +++ b/src/HOL/Enum.thy	Mon Jan 30 13:55:21 2012 +0100
     1.3 @@ -791,6 +791,10 @@
     1.4    "tranclp r a b \<equiv> (a, b) \<in> trancl {(x, y). r x y}"
     1.5  by (simp add: trancl_def)
     1.6  
     1.7 +lemma max_ext_eq[code]:
     1.8 +  "max_ext R = {(X, Y). finite X & finite Y & Y ~={} & (ALL x. x : X --> (EX xa : Y. (x, xa) : R))}"
     1.9 +by (auto simp add: max_ext.simps)
    1.10 +
    1.11  subsection {* Executable accessible part *}
    1.12  (* FIXME: should be moved somewhere else !? *)
    1.13