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declare bin_rest_BIT_bin_last [simp]
authorhuffman
Thu, 23 Aug 2007 18:47:08 +0200
changeset 24412 9c7bb416f344
parent 24411 0c9af72fb303
child 24413 5073729e5c12
declare bin_rest_BIT_bin_last [simp]
src/HOL/Word/BinInduct.thy file | annotate | diff | comparison | revisions 
--- a/src/HOL/Word/BinInduct.thy	Thu Aug 23 16:47:16 2007 +0200
+++ b/src/HOL/Word/BinInduct.thy	Thu Aug 23 18:47:08 2007 +0200
@@ -126,7 +126,7 @@
 lemma bin_last_Min [simp]: "bin_last Numeral.Min = bit.B1"
   by (subst Min_1_eq [symmetric], rule bin_last_BIT)
 
-lemma bin_rest_BIT_bin_last: "(bin_rest x) BIT (bin_last x) = x"
+lemma bin_rest_BIT_bin_last [simp]: "(bin_rest x) BIT (bin_last x) = x"
   by (cases x rule: BIT_cases) simp
 
 lemma wf_bin_rest:
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