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Re: [ontolog-forum] language vs logic - ambiguity and startingwithdefini

To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Christopher Menzel <cmenzel@xxxxxxxx>
Date: Tue, 21 Sep 2010 13:00:41 -0500
Message-id: <4C98F2C9.5070609@xxxxxxxx>
On 9/21/2010 12:05 AM, Alex Shkotin wrote:
Hi Pavithra,

it seems we should consider separately:
- First order language - simple context free language
First-order languages are not necessarily context free.  For instance, some first-order languages don't allow vacuous quantification; checking for this requires a lookahead that makes the language context sensitive.

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