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src/HOL/Option.thy
changeset 58889 5b7a9633cfa8
parent 58310 91ea607a34d8
child 58895 de0a4a76d7aa
equal deleted inserted replaced
58888:9537bf1c4853 58889:5b7a9633cfa8 
     1 (*  Title:      HOL/Option.thy
 
     1 (*  Title:      HOL/Option.thy
 
     2     Author:     Folklore
 
     2     Author:     Folklore
 
     3 *)
 
     3 *)
 
     4 
     4 
     5 header {* Datatype option *}
 
     5 section {* Datatype option *}
 
     6 
     6 
     7 theory Option
 
     7 theory Option
 
     8 imports BNF_Least_Fixpoint Finite_Set
 
     8 imports BNF_Least_Fixpoint Finite_Set
 
     9 begin
 
     9 begin
 
    10 
    10
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