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(* Title: HOL/IOA/ABP/Abschannel_finite.thy
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ID: $Id$
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Author: Olaf Mueller
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Copyright 1995 TU Muenchen
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The transmission channel -- finite version
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*)
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Abschannel_finite = Abschannel+ IOA + Action + Lemmas + List +
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consts
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ch_fin_asig :: "'a act signature"
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ch_fin_trans :: "('a act, 'a list)transition set"
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ch_fin_ioa :: "('a act, 'a list)ioa"
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srch_fin_asig,
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rsch_fin_asig :: "'m action signature"
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srch_fin_trans :: "('m action, 'm packet list)transition set"
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rsch_fin_trans :: "('m action, bool list)transition set"
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srch_fin_ioa :: "('m action, 'm packet list)ioa"
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rsch_fin_ioa :: "('m action, bool list)ioa"
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reverse :: "'a list => 'a list"
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primrec
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reverse List.list
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reverse_Nil "reverse([]) = []"
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reverse_Cons "reverse(x#xs) = reverse(xs)@[x]"
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defs
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srch_fin_asig_def "srch_fin_asig == asig_of(srch_fin_ioa)"
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rsch_fin_asig_def "rsch_fin_asig == asig_of(rsch_fin_ioa)"
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srch_fin_trans_def "srch_fin_trans == trans_of(srch_fin_ioa)"
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rsch_fin_trans_def "rsch_fin_trans == trans_of(rsch_fin_ioa)"
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srch_fin_ioa_def "srch_fin_ioa == rename ch_fin_ioa srch_actions"
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rsch_fin_ioa_def "rsch_fin_ioa == rename ch_fin_ioa rsch_actions"
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ch_fin_asig_def "ch_fin_asig == ch_asig"
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ch_fin_trans_def "ch_fin_trans == \
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\ {tr. let s = fst(tr); \
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\ t = snd(snd(tr)) \
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\ in \
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\ case fst(snd(tr)) \
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\ of S(b) => ((t = s) | \
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\ (if (b=hd(reverse(s)) & s~=[]) then t=s else t=s@[b])) | \
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\ R(b) => s ~= [] & \
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\ b = hd(s) & \
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\ ((t = s) | (t = tl(s))) }"
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ch_fin_ioa_def "ch_fin_ioa == (ch_fin_asig, {[]}, ch_fin_trans)"
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end
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