changeset 51779 | 273e7a90b167 |
parent 51778 | 190f89980f7b |
child 51788 | 5fe72280a49f |
--- a/src/HOL/BNF/Examples/Stream.thy Thu Apr 25 17:13:24 2013 +0200 +++ b/src/HOL/BNF/Examples/Stream.thy Thu Apr 25 17:25:10 2013 +0200 @@ -197,7 +197,7 @@ proof assume ?R thus ?L - by (coinduct rule: stream.coinduct[of "\<lambda>s1 s2. \<exists>n. s1 = smap f (sdrop n s) \<and> s2 = sdrop n s'"]) + by (coinduct rule: stream.coinduct[of "\<lambda>s1 s2. \<exists>n. s1 = smap f (sdrop n s) \<and> s2 = sdrop n s'", consumes 0]) (auto intro: exI[of _ 0] simp del: sdrop.simps(2)) qed auto