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doc-src/Tutorial/ToyList/lemma3
author
wenzelm
Fri, 16 Apr 1999 17:48:31 +0200
changeset 6447
83d8dabdae9a
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
lifted enum; removed list(1); added and_list(1);
Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
by(induct_tac "xs" 1);
by(Auto_tac);