src/HOL/Isar_examples/Cantor.ML
author paulson
Tue Jun 28 15:27:45 2005 +0200 (2005-06-28)
changeset 16587 b34c8aa657a5
parent 9474 b0ce3b7c9c26
permissions -rw-r--r--
Constant "If" is now local
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(* tactic script -- single steps *)
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Goal "EX S. S ~: range (f :: 'a => 'a set)";
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  by (rtac exI 1);
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  by (rtac notI 1);
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  by (etac rangeE 1);
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  by (etac equalityCE 1);
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  by (dtac CollectD 1);
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  by (contr_tac 1);
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  by (swap_res_tac [CollectI] 1);
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  by (assume_tac 1);
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qed "";
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(* tactic script -- automatic *)
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Goal "EX S. S ~: range (f :: 'a => 'a set)";
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  by (Best_tac 1);
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qed "";