src/FOL/fol.thy
author wenzelm
Sun, 29 Nov 1998 13:16:47 +0100
changeset 5989 9670dae0143d
parent 0 a5a9c433f639
permissions -rw-r--r--
proof_general_trans (experimental);
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FOL = IFOL +
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rules
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classical "(~P ==> P) ==> P"
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end