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src/FOL/FOL_lemmas2.ML
author
wenzelm
Mon, 05 Aug 2002 21:17:04 +0200
changeset 13457
7ddcf40a80b3
parent 9264
051592f4236a
permissions
-rw-r--r--
tuned; subsection on simple meta-theory of structures;
Goal "[| EX! z. P(a,z); P(a,b); P(a,c) |] ==> b = c";
by (Blast_tac 1);
qed "ex1_functional";