diff -r 4b198af5beb5 -r c57dba973391 src/HOL/Nitpick.thy
--- a/src/HOL/Nitpick.thy	Sat Feb 13 11:56:06 2010 +0100
+++ b/src/HOL/Nitpick.thy	Sat Feb 13 15:04:09 2010 +0100
@@ -37,7 +37,6 @@
            and bisim_iterator_max :: bisim_iterator
            and Quot :: "'a \<Rightarrow> 'b"
            and quot_normal :: "'a \<Rightarrow> 'a"
-           and Silly :: "'a \<Rightarrow> 'b"
            and Tha :: "('a \<Rightarrow> bool) \<Rightarrow> 'a"
 
 datatype ('a, 'b) pair_box = PairBox 'a 'b
@@ -45,7 +44,6 @@
 
 typedecl unsigned_bit
 typedecl signed_bit
-typedecl \<xi>
 
 datatype 'a word = Word "('a set)"
 
@@ -254,12 +252,12 @@
 setup {* Nitpick_Isar.setup *}
 
 hide (open) const unknown is_unknown undefined_fast_The undefined_fast_Eps bisim 
-    bisim_iterator_max Quot quot_normal Silly Tha PairBox FunBox Word refl' wf'
+    bisim_iterator_max Quot quot_normal Tha PairBox FunBox Word refl' wf'
     wf_wfrec wf_wfrec' wfrec' card' setsum' fold_graph' nat_gcd nat_lcm int_gcd
     int_lcm Frac Abs_Frac Rep_Frac zero_frac one_frac num denom norm_frac frac
     plus_frac times_frac uminus_frac number_of_frac inverse_frac less_eq_frac
     of_frac
-hide (open) type bisim_iterator pair_box fun_box unsigned_bit signed_bit \<xi> word
+hide (open) type bisim_iterator pair_box fun_box unsigned_bit signed_bit word
 hide (open) fact If_def Ex1_def rtrancl_def rtranclp_def tranclp_def refl'_def
     wf'_def wf_wfrec'_def wfrec'_def card'_def setsum'_def fold_graph'_def
     The_psimp Eps_psimp unit_case_def nat_case_def list_size_simp nat_gcd_def