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src/FOLP/ex/if.thy
author paulson
Wed, 25 Nov 1998 15:54:41 +0100
changeset 5971 c5a7a7685826
parent 0 a5a9c433f639
permissions -rw-r--r--
simplified ensures_UNIV

If = FOLP +
consts  if     :: "[o,o,o]=>o"
rules
        if_def "if(P,Q,R) == P&Q | ~P&R"
end
isabelle