| author | paulson |
| Fri, 18 Feb 2000 15:35:29 +0100 | |
| changeset 8255 | 38f96394c099 |
| parent 243 | c22b85994e17 |
| permissions | -rw-r--r-- |
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Franz Regensburger's Higher-Order Logic of Computable Functions embedding LCF
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(* Title: HOLCF/ssum1.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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Partial ordering for the strict sum ++ |
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*) |
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Ssum1 = Ssum0 + |
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consts |
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less_ssum :: "[('a ++ 'b),('a ++ 'b)] => bool"
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rules |
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less_ssum_def "less_ssum(s1,s2) == (@z.\ |
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\ (! u x.s1=Isinl(u) & s2=Isinl(x) --> z = (u << x))\ |
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\ &(! v y.s1=Isinr(v) & s2=Isinr(y) --> z = (v << y))\ |
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\ &(! u y.s1=Isinl(u) & s2=Isinr(y) --> z = (u = UU))\ |
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\ &(! v x.s1=Isinr(v) & s2=Isinl(x) --> z = (v = UU)))" |
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end |
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