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src/FOL/fol.thy
author
paulson
Mon, 14 Aug 1995 13:42:27 +0200
changeset 1228
7d6b0241afab
parent 0
a5a9c433f639
permissions
-rw-r--r--
updated version number to revision 4
FOL = IFOL +
rules
classical "(~P ==> P) ==> P"
end