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doc-src/Tutorial/ToyList/lemma3
author
nipkow
Mon, 09 Oct 2000 19:20:55 +0200
changeset 10178
aecb5bf6f76f
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
*** empty log message ***
Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
by(induct_tac "xs" 1);
by(Auto_tac);