src/FOL/FOL_lemmas2.ML
author wenzelm
Fri, 04 Aug 2000 22:56:31 +0200
changeset 9528 95852b4be214
parent 9264 051592f4236a
permissions -rw-r--r--
rev_eq_reflection = meta_eq_to_obj_eq;
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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";