--- a/src/FOLP/ex/prolog.thy Sat Apr 05 16:00:00 2003 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,22 +0,0 @@
-(* Title: FOL/ex/prolog.thy
- ID: $Id$
- Author: Lawrence C Paulson, Cambridge University Computer Laboratory
- Copyright 1992 University of Cambridge
-
-First-Order Logic: PROLOG examples
-
-Inherits from FOL the class term, the type o, and the coercion Trueprop
-*)
-
-Prolog = FOL +
-types list 1
-arities list :: (term)term
-consts Nil :: "'a list"
- ":" :: "['a, 'a list]=> 'a list" (infixr 60)
- app :: "['a list, 'a list, 'a list] => o"
- rev :: "['a list, 'a list] => o"
-rules appNil "app(Nil,ys,ys)"
- appCons "app(xs,ys,zs) ==> app(x:xs, ys, x:zs)"
- revNil "rev(Nil,Nil)"
- revCons "[| rev(xs,ys); app(ys, x:Nil, zs) |] ==> rev(x:xs, zs)"
-end