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doc-src/Tutorial/ToyList/lemma3
author
paulson
Fri, 10 May 2002 22:52:59 +0200
changeset 13136
0cf167bd8a32
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
obsolete ML files
Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
by(induct_tac "xs" 1);
by(Auto_tac);