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doc-src/Tutorial/Misc/NatSum.ML
author wenzelm
Fri, 05 Feb 1999 21:11:41 +0100
changeset 6249 8bb90076cc7c
parent 5377 efb799c5ed3c
permissions -rw-r--r--
Session.use_dir: check parent;
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
5377
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Goal "sum n + sum n = n*(Suc n)";
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by(induct_tac "n" 1);
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by(Auto_tac);
isabelle