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src/FOL/FOL_lemmas2.ML
author
wenzelm
Tue, 01 Aug 2000 11:58:14 +0200
changeset 9487
7e377f912629
parent 9264
051592f4236a
permissions
-rw-r--r--
improved comments; added all_eq, imp_eq (for blast); basic calculational rules;
Goal "[| EX! z. P(a,z); P(a,b); P(a,c) |] ==> b = c";
by (Blast_tac 1);
qed "ex1_functional";