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doc-src/Tutorial/ToyList/lemma3
author
paulson
Fri, 18 Sep 1998 16:04:44 +0200
changeset 5509
c38cc427976c
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
Now defines "int" as a linear order; basic derivations moved to IntDef
Goal "(xs @ ys) @ zs = xs @ (ys @ zs)";
by(induct_tac "xs" 1);
by(Auto_tac);