progs/Matcher2.thy
changeset 971 b7d97a2a083b
parent 970 e15be5466802
child 1009 7fd1997bd14c
equal deleted inserted replaced
970:e15be5466802 971:b7d97a2a083b
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   127 
   128 lemma Star_def2: 
   128 lemma Star_def2: 
   129   shows "A\<star> = (\<Union>n. A \<up> n)"
   129   shows "A\<star> = (\<Union>n. A \<up> n)"
   130 using Star_in_Pow Pow_in_Star
   130 using Star_in_Pow Pow_in_Star
   131 by (auto)
   131 by (auto)
   132 
       
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   132 
   134 
   133 
   135 section \<open>Semantics of Regular Expressions\<close>
   134 section \<open>Semantics of Regular Expressions\<close>
   136  
   135  
   137 fun
   136 fun