| author | paulson |
| Sun, 23 Apr 2000 11:41:06 +0200 | |
| changeset 8769 | 981ebe7f1f10 |
| parent 8256 | 6ba8fa2b0638 |
| child 9403 | aad13b59b8d9 |
| permissions | -rw-r--r-- |
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Rename: theory for applying a bijection over states to a UNITY program
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(* Title: HOL/UNITY/Rename.thy |
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ID: $Id$ |
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Author: Lawrence C Paulson, Cambridge University Computer Laboratory |
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Copyright 2000 University of Cambridge |
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Renaming of state sets |
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*) |
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Rename = Extend + |
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constdefs |
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rename_act :: "['a => 'b, ('a*'a) set] => ('b*'b) set"
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"rename_act h == extend_act (%(x,u::unit). h x)" |
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(**OR |
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"rename_act h == %act. UN (s,s'): act. {(h s, h s')}"
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"rename_act h == %act. (prod_fun h h) `` act" |
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**) |
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rename :: "['a => 'b, 'a program] => 'b program" |
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"rename h == extend (%(x,u::unit). h x)" |
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end |