doc-src/Tutorial/ToyList/lemma3
author nipkow
Thu, 26 Feb 2004 01:04:39 +0100
changeset 14414 3fd75e96145d
parent 5377 efb799c5ed3c
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corrected authors
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Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
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by(induct_tac "xs" 1);
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by(Auto_tac);