| author | nipkow |
| Tue, 11 Apr 1995 12:01:11 +0200 | |
| changeset 1028 | 88c8df00905b |
| parent 442 | 13ac1fd0a14d |
| child 1168 | 74be52691d62 |
| 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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