--- a/src/HOLCF/Up.thy Thu Sep 22 18:59:41 2005 +0200
+++ b/src/HOLCF/Up.thy Thu Sep 22 19:06:05 2005 +0200
@@ -130,9 +130,7 @@
apply (simp add: expand_fun_eq)
apply (erule exE, rename_tac j)
apply (rule_tac x="\<lambda>i. THE a. Iup a = Y (i + j)" in exI)
-apply (rule conjI)
apply (simp add: up_lemma4)
-apply (rule conjI)
apply (simp add: up_lemma6 [THEN thelubI])
apply (rule_tac x=j in exI)
apply (simp add: up_lemma3)
@@ -143,8 +141,7 @@
apply (rule_tac x="Iup (lub (range A))" in exI)
apply (erule_tac j1="j" in is_lub_range_shift [THEN iffD1])
apply (simp add: is_lub_Iup thelubE)
-apply (rule_tac x="Ibottom" in exI)
-apply (rule lub_const)
+apply (rule exI, rule lub_const)
done
instance u :: (cpo) cpo
@@ -152,7 +149,7 @@
subsection {* Type @{typ "'a u"} is pointed *}
-lemma least_up: "EX x::'a u. ALL y. x\<sqsubseteq>y"
+lemma least_up: "\<exists>x::'a u. \<forall>y. x \<sqsubseteq> y"
apply (rule_tac x = "Ibottom" in exI)
apply (rule minimal_up [THEN allI])
done