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doc-src/Tutorial/ToyList/lemma3
author
wenzelm
Thu, 17 Aug 2000 10:33:37 +0200
changeset 9619
6125cc9efc18
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
fixed deps;
Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
by(induct_tac "xs" 1);
by(Auto_tac);