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(* Title: HOL/Corec_Examples/Tests/Merge_A.thy
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Author: Aymeric Bouzy, Ecole polytechnique
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Author: Jasmin Blanchette, Inria, LORIA, MPII
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Copyright 2015, 2016
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Tests theory merges.
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*)
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62726
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section \<open>Tests Theory Merges\<close>
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theory Merge_A
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imports "~~/src/HOL/Library/BNF_Corec"
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begin
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codatatype 'a ta = Ca (sa1: 'a) (sa2: "'a ta")
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consts gb :: "'a ta \<Rightarrow> 'a ta"
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corec fa where
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"fa = Ca (Suc 0) fa"
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corec ga :: "'a ta \<Rightarrow> 'a ta" where
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"ga t = Ca (sa1 t) (sa2 t)"
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friend_of_corec ga :: "'a ta \<Rightarrow> 'a ta" where
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"ga t = Ca (sa1 t) (Ca (sa1 t) (sa2 t))"
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sorry
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thm ta.coinduct_upto
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thm ta.cong_refl
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end
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