src/FOL/FOL_lemmas2.ML
author wenzelm
Fri, 09 Nov 2001 22:50:32 +0100
changeset 12127 219e543496a3
parent 9264 051592f4236a
permissions -rw-r--r--
theorems case_split = case_split_thm [case_names True False, cases type: o];
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Goal "[| EX! z. P(a,z);  P(a,b);  P(a,c) |] ==> b = c";
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  by (Blast_tac 1);
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qed "ex1_functional";