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(* Title: HOL/IOA/meta_theory/Solve.thy
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ID: $Id$
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Author: Tobias Nipkow & Konrad Slind
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Copyright 1994 TU Muenchen
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Weak possibilities mapping (abstraction)
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*)
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Solve = IOA +
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1570
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constdefs
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is_weak_pmap :: "['c => 'a, ('action,'c)ioa,('action,'a)ioa] => bool"
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"is_weak_pmap f C A ==
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(!s:starts_of(C). f(s):starts_of(A)) &
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(!s t a. reachable C s &
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(s,a,t):trans_of(C)
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--> (if a:externals(asig_of(C)) then
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(f(s),a,f(t)):trans_of(A)
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else f(s)=f(t)))"
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end
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