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doc-src/Tutorial/Misc/Exor.thy
author paulson
Wed, 28 Jul 1999 13:55:34 +0200
changeset 7123 4ab38de3fd20
parent 5377 efb799c5ed3c
permissions -rw-r--r--
congruence rule for |-, etc.
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Exor = Main +
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constdefs
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 exor :: bool => bool => bool
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"exor A B == (A & ~B) | (~A & B)"
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end
isabelle