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doc-src/Tutorial/Misc/Exor.thy
author
paulson
Fri, 18 Sep 1998 14:32:49 +0200
changeset 5494
2df1a9d43e3c
parent 5377
efb799c5ed3c
permissions
-rw-r--r--
improved error messages
Exor = Main +
constdefs
exor :: bool => bool => bool
"exor A B == (A & ~B) | (~A & B)"
end