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src/FOLP/ex/if.thy
author lcp
Wed, 03 May 1995 17:38:27 +0200
changeset 1105 136b05aa77ed
parent 0 a5a9c433f639
permissions -rw-r--r--
Modified proofs for (q)split, fst, snd for new definitions. The rule f(q)splitE is now called (q)splitE and is weaker than before. The rule '(q)split' is now a meta-equality; this required modifying all proofs involving e.g. split RS trans.
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If = FOLP +
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consts  if     :: "[o,o,o]=>o"
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rules
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        if_def "if(P,Q,R) == P&Q | ~P&R"
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end
isabelle