| author | slotosch |
| Sun, 25 May 1997 16:17:09 +0200 | |
| changeset 3324 | 6b26b886ff69 |
| parent 243 | c22b85994e17 |
| permissions | -rw-r--r-- |
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(* Title: HOLCF/ssum3.thy |
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ID: $Id$ |
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Author: Franz Regensburger |
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Copyright 1993 Technische Universitaet Muenchen |
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Class instance of ++ for class pcpo |
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*) |
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Ssum3 = Ssum2 + |
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arities "++" :: (pcpo,pcpo)pcpo (* Witness ssum2.ML *) |
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consts |
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sinl :: "'a -> ('a++'b)"
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sinr :: "'b -> ('a++'b)"
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when :: "('a->'c)->('b->'c)->('a ++ 'b)-> 'c"
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rules |
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inst_ssum_pcpo "UU::'a++'b = Isinl(UU)" |
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sinl_def "sinl == (LAM x.Isinl(x))" |
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sinr_def "sinr == (LAM x.Isinr(x))" |
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when_def "when == (LAM f g s.Iwhen(f)(g)(s))" |
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end |
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