author | haftmann |
Sun, 17 Jul 2011 22:25:14 +0200 | |
changeset 44745 | 74f1f2dd8f52 |
parent 44744 | 8a2f339641c1 |
child 44746 | 485d2ad43528 |
src/HOL/Fun.thy | file | annotate | diff | comparison | revisions |
1.1 --- a/src/HOL/Fun.thy Sun Jul 17 22:24:08 2011 +0200 1.2 +++ b/src/HOL/Fun.thy Sun Jul 17 22:25:14 2011 +0200 1.3 @@ -34,15 +34,9 @@ 1.4 lemma id_apply [simp]: "id x = x" 1.5 by (simp add: id_def) 1.6 1.7 -lemma image_ident [simp]: "(%x. x) ` Y = Y" 1.8 -by blast 1.9 - 1.10 lemma image_id [simp]: "id ` Y = Y" 1.11 by (simp add: id_def) 1.12 1.13 -lemma vimage_ident [simp]: "(%x. x) -` Y = Y" 1.14 -by blast 1.15 - 1.16 lemma vimage_id [simp]: "id -` A = A" 1.17 by (simp add: id_def) 1.18