| author | paulson |
| Thu, 15 Jul 1999 10:27:54 +0200 | |
| changeset 7007 | b46ccfee8e59 |
| parent 243 | c22b85994e17 |
| permissions | -rw-r--r-- |
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(* Title: HOLCF/cprod3.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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Cprod3 = Cprod2 + |
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arities "*" :: (pcpo,pcpo)pcpo (* Witness cprod2.ML *) |
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consts |
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"@cpair" :: "'a => 'b => ('a*'b)" ("_#_" [101,100] 100)
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"cop @cpair" :: "'a -> 'b -> ('a*'b)" ("cpair")
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(* continuous pairing *) |
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cfst :: "('a*'b)->'a"
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csnd :: "('a*'b)->'b"
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csplit :: "('a->'b->'c)->('a*'b)->'c"
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rules |
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inst_cprod_pcpo "UU::'a*'b = <UU,UU>" |
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cpair_def "cpair == (LAM x y.<x,y>)" |
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cfst_def "cfst == (LAM p.fst(p))" |
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csnd_def "csnd == (LAM p.snd(p))" |
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csplit_def "csplit == (LAM f p.f[cfst[p]][csnd[p]])" |
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end |
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ML |
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(* ----------------------------------------------------------------------*) |
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(* parse translations for the above mixfix *) |
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(* ----------------------------------------------------------------------*) |
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val parse_translation = [("@cpair",mk_cinfixtr "@cpair")];
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