src/HOL/Statespace/StateSpaceLocale.thy
author hoelzl
Thu Sep 02 10:14:32 2010 +0200 (2010-09-02)
changeset 39072 1030b1a166ef
parent 38838 62f6ba39b3d4
child 41959 b460124855b8
permissions -rw-r--r--
Add lessThan_Suc_eq_insert_0
     1 (*  Title:      StateSpaceLocale.thy
     2     Author:     Norbert Schirmer, TU Muenchen
     3 *)
     4 
     5 header {* Setup for State Space Locales \label{sec:StateSpaceLocale}*}
     6 
     7 theory StateSpaceLocale imports StateFun 
     8 uses "state_space.ML" "state_fun.ML"
     9 begin
    10 
    11 setup StateFun.setup
    12 
    13 text {* For every type that is to be stored in a state space, an
    14 instance of this locale is imported in order convert the abstract and
    15 concrete values.*}
    16 
    17 
    18 locale project_inject =
    19  fixes project :: "'value \<Rightarrow> 'a"
    20   and inject :: "'a \<Rightarrow> 'value"
    21  assumes project_inject_cancel [statefun_simp]: "project (inject x) = x"
    22 
    23 lemma (in project_inject)
    24  ex_project [statefun_simp]: "\<exists>v. project v = x"
    25   apply (rule_tac x= "inject x" in exI)
    26   apply (simp add: project_inject_cancel)
    27   done
    28 
    29 lemma (in project_inject)
    30  project_inject_comp_id [statefun_simp]: "project \<circ> inject = id"
    31   by (rule ext) (simp add: project_inject_cancel)
    32 
    33 lemma (in project_inject)
    34  project_inject_comp_cancel[statefun_simp]: "f \<circ> project \<circ> inject = f"
    35   by (rule ext) (simp add: project_inject_cancel)
    36 
    37 
    38 
    39 end