src/HOL/HOLCF/IOA/Storage/Action.thy
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(*  Title:      HOL/HOLCF/IOA/Storage/Action.thy
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    Author:     Olaf Müller
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*)
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section \<open>The set of all actions of the system\<close>
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theory Action
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imports Main
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begin
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datatype action = New | Loc nat | Free nat
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lemma [cong]: "\<And>x. x = y \<Longrightarrow> case_action a b c x = case_action a b c y"
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  by simp
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end