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src/FOL/fol.thy
author
wenzelm
Thu, 24 Jan 2002 22:42:14 +0100
changeset 12847
afa356dbcb15
parent 0
a5a9c433f639
permissions
-rw-r--r--
fixed subgoal_tac; fails on non-existent subgoal;
FOL = IFOL +
rules
classical "(~P ==> P) ==> P"
end