src/FOL/ex/if.thy
author wenzelm
Wed, 14 Sep 1994 16:11:19 +0200
changeset 613 f9eb0f819642
parent 0 a5a9c433f639
permissions -rw-r--r--
removed lookup_const (use Sign.const_type instead);

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