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doc-src/Tutorial/Misc/NatSum.ML
author wenzelm
Tue, 04 Apr 2000 18:08:08 +0200
changeset 8666 6c21e6f91804
parent 5377 efb799c5ed3c
permissions -rw-r--r--
case_tac / induct_tac: optional rule;
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5377
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nipkow
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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