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Re: BLD: two issues with the BNF

From: Jos de Bruijn <debruijn@inf.unibz.it>
Date: Fri, 11 Jul 2008 09:29:54 +0200
Message-ID: <48770BF2.1000304@inf.unibz.it>
To: kifer@cs.sunysb.edu
CC: RIF <public-rif-wg@w3.org>

>> The second issue is not an error, but it can be considered misleading 
>> (the BNF is too liberal): in the presentation syntax, rules are 
>> quantified rule implications.  So, an atomic formula is not a rule and 
>> may thus not be directly included in a group.  According to the BNF, an 
>> atomic formula can be considered a rule; this is misleading.
> There was a mistake in the math syntax. Groups should also allow atomic
> formulas. Fixed.

One more thing: atomic formulas can also contain variables.  I guess 
that such non-ground atomic formulas should not be allowed in groups?

Best, Jos

> m
>> Best, Jos


Jos de Bruijn,        http://www.debruijn.net/
One man that has a mind and knows it can
always beat ten men who haven't and don't.
   -- George Bernard Shaw

Received on Friday, 11 July 2008 07:30:39 UTC

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