src/HOL/Enum.thy
changeset 46359 9bc43dc49d0a
parent 46358 b2a936486685
child 46361 87d5d36a9005
     1.1 --- a/src/HOL/Enum.thy	Mon Jan 30 13:55:21 2012 +0100
     1.2 +++ b/src/HOL/Enum.thy	Mon Jan 30 13:55:22 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 rtranclp_rtrancl_eq[code, no_atp]:
     1.8 +  "rtranclp r x y = ((x, y) : rtrancl {(x, y). r x y})"
     1.9 +unfolding rtrancl_def by auto
    1.10 +
    1.11  lemma max_ext_eq[code]:
    1.12    "max_ext R = {(X, Y). finite X & finite Y & Y ~={} & (ALL x. x : X --> (EX xa : Y. (x, xa) : R))}"
    1.13  by (auto simp add: max_ext.simps)