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doc-src/Tutorial/ToyList/lemma3
changeset 15338
08519594b0e4
parent 15337
628d87767434
child 15339
a7b603bbc1e6
equal
deleted
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15337:628d87767434
15338:08519594b0e4
1
Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
2
by(induct_tac "xs" 1);
3
by(Auto_tac);