src/FOL/FOL_lemmas2.ML
author wenzelm
Sun, 15 Oct 2000 19:50:35 +0200
changeset 10220 2a726de6e124
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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";