src/FOL/FOL_lemmas2.ML
author wenzelm
Thu, 27 Sep 2001 16:04:11 +0200
changeset 11588 d792570a04b1
parent 9264 051592f4236a
permissions -rw-r--r--
AddXEs [disjI1, disjI2];
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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";