IOA/meta_theory/Solve.thy
author clasohm
Tue, 24 Oct 1995 14:59:17 +0100
changeset 251 f04b33ce250f
parent 249 492493334e0f
permissions -rw-r--r--
added calls of init_html and make_chart

(*  Title:      HOL/IOA/meta_theory/Solve.thy
    ID:         $Id$
    Author:     Tobias Nipkow & Konrad Slind
    Copyright   1994  TU Muenchen

Weak possibilities mapping (abstraction)
*)

Solve = IOA +

consts

  is_weak_pmap :: "['c => 'a, ('action,'c)ioa,('action,'a)ioa] => bool"

defs

is_weak_pmap_def
  "is_weak_pmap(f,C,A) ==                       
   (!s:starts_of(C). f(s):starts_of(A)) &      
   (!s t a. reachable(C,s) &                   
            <s,a,t>:trans_of(C)                
            --> if(a:externals(asig_of(C)),    
                   <f(s),a,f(t)>:trans_of(A),  
                   f(s)=f(t)))"

end