Mercurial Mercurial > repos > Old_HOL / file revision
summary | shortlog | changelog | graph | tags | bookmarks | branches | files | changeset | file | latest | revisions | annotate | diff | comparison | raw | help
Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
ex/PL0.thy
author lcp
Tue, 08 Nov 1994 11:21:33 +0100
changeset 166 c59c471126ab
parent 91 a94029edb01f
permissions -rw-r--r--
HOL/ROOT/HOL_dup_cs: removed as obsolete HOL/ROOT: now passes "classical" to Classical_Fun HOL/ROOT: no longer proves rev_cut_eq for hyp_subst_tac

(*  Title: 	HOL/ex/pl0.thy
    ID:         $Id$
    Author: 	Tobias Nipkow
    Copyright   1994  TU Muenchen

Syntax of propositional logic formulae.
*)

PL0 = HOL +
datatype
    'a pl = false | var ('a) ("#_") | "->" ('a pl,'a pl) (infixr 90)
end
Old_HOL