src/FOL/ex/if.thy
author wenzelm
Sun, 25 Oct 1998 12:33:27 +0100
changeset 5769 6a422b22ba02
parent 0 a5a9c433f639
permissions -rw-r--r--
tuned checklist;

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