src/HOL/Datatype.thy
author berghofe
Fri, 23 Oct 1998 22:34:18 +0200
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child 10212 33fe2d701ddd
permissions -rw-r--r--
unit and bool are now represented as datatypes.
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(*  Title:      HOL/Datatype.thy
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    ID:         $Id$
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    Author:     Stefan Berghofer
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    Copyright   1998  TU Muenchen
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*)
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Datatype = Univ +
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rep_datatype bool
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  distinct True_not_False, False_not_True
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  induct   bool_induct
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rep_datatype sum
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  distinct Inl_not_Inr, Inr_not_Inl
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  inject   Inl_eq, Inr_eq
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  induct   sum_induct
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rep_datatype prod
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  inject   Pair_eq
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  induct   prod_induct
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rep_datatype unit
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  induct   unit_induct
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end