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doc-src/Tutorial/Misc/NatSum.ML
author wenzelm
Mon, 14 Aug 2000 18:47:32 +0200
changeset 9605 60d8c954390f
parent 5377 efb799c5ed3c
permissions -rw-r--r--
added 'declare' command; moved tactic emulations; tuned; renamed "res_inst_tac' etc. to 'rule_tac' etc.; tuned;
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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