src/FOL/FOL_lemmas2.ML
author paulson
Fri, 18 Feb 2000 15:35:29 +0100
changeset 8255 38f96394c099
parent 7355 4c43090659ca
child 9264 051592f4236a
permissions -rw-r--r--
new distributive laws
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
7355
4c43090659ca proper bootstrap of IFOL/FOL theories and packages;
wenzelm
parents:
diff changeset
     1
4c43090659ca proper bootstrap of IFOL/FOL theories and packages;
wenzelm
parents:
diff changeset
     2
Goal "!!a b c. [| EX! z. P(a,z);  P(a,b);  P(a,c) |] ==> b = c";
4c43090659ca proper bootstrap of IFOL/FOL theories and packages;
wenzelm
parents:
diff changeset
     3
  by (Blast_tac 1);
4c43090659ca proper bootstrap of IFOL/FOL theories and packages;
wenzelm
parents:
diff changeset
     4
qed "ex1_functional";