| author | paulson |
| Mon, 14 Aug 1995 13:42:27 +0200 | |
| changeset 1228 | 7d6b0241afab |
| parent 1168 | 74be52691d62 |
| child 1274 | ea0668a1c0ba |
| 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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sswhen :: "('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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defs |
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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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sswhen_def "sswhen == (LAM f g s.Iwhen(f)(g)(s))" |
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end |