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src/FOL/fol.thy
author
paulson
Mon, 07 Aug 2000 10:26:02 +0200
changeset 9543
ce61d1c1a509
parent 0
a5a9c433f639
permissions
-rw-r--r--
new abstract syntax operations, used in ZF
FOL = IFOL +
rules
classical "(~P ==> P) ==> P"
end