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src/HOL/Lex/Prefix.thy
author paulson
Fri, 21 May 1999 10:50:04 +0200
changeset 6675 63e53327f5e5
parent 1476 608483c2122a
child 8523 7ffc94f2f42d
permissions -rw-r--r--
changes to show that Lists are partially ordered by the prefix relation

(*  Title:      HOL/Lex/Prefix.thy
    ID:         $Id$
    Author:     Tobias Nipkow
    Copyright   1995 TUM
*)

Prefix = List +

arities list :: (term)ord

defs
        prefix_def        "xs <= zs  ==  ? ys. zs = xs@ys"

        strict_prefix_def "xs < zs  ==  xs <= zs & xs ~= (zs::'a list)"
  
end
isabelle