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doc-src/Tutorial/ToyList/lemma3
author
paulson
Thu, 16 Oct 2003 10:31:40 +0200
changeset 14236
c73d62ce9d1c
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
partial conversion to Isar scripts
Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
by(induct_tac "xs" 1);
by(Auto_tac);