src/FOL/fol.thy
author wenzelm
Tue, 25 May 1999 20:24:10 +0200
changeset 6729 b6e167580a32
parent 0 a5a9c433f639
permissions -rw-r--r--
formal comments (still dummy);
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FOL = IFOL +
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rules
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classical "(~P ==> P) ==> P"
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end