| author | convert-repo |
| Thu, 23 Jul 2009 14:03:20 +0000 | |
| changeset 255 | 435bf30c29a5 |
| parent 56 | 385d51d74f71 |
| permissions | -rw-r--r-- |
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Used Datatype functor to define propositional logic terms.
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(* Title: HOL/ex/pl0.thy |
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ID: $Id$ |
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Author: Tobias Nipkow |
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Copyright 1994 TU Muenchen |
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Syntax of propositional logic formulae. |
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*) |
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PL0 = HOL + |
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types 'a pl |
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arities pl :: (term)term |
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consts |
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false :: "'a pl" |
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"->" :: "['a pl,'a pl] => 'a pl" (infixr 90) |
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var :: "'a => 'a pl" ("#_")
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end |