RE: [sv-ac] Re: 1932 LTL.1932.20071114.pdf some errata.

From: Bustan, Doron <doron.bustan_at_.....>
Date: Mon Dec 03 2007 - 03:45:55 PST
Hi Johan,

Ok, I am convinced that my text is bad (even wrong.) 

>"Similarly properties of the form weak(sequence_expr) are evaluated to
>true if and only if the corresponding properties of the form
>(weak(first_match(sequence_expr))) are evaluated to true
>respectively.  The reason is that a finite prefix of a trace vitnesses
>a non-match of a sequence_expr if and only if it vitnesses a non-match
>of the first_match of that sequence_expr."

I don't think that the explanation adds any information to the reader.
I don't see how to give informal explanation for the weak operator that
is not confusing. Even the "finite witness" is wage. The "potential
match" is wrong because sequences of the form "1[0:$] ##1 0" do not have
potential matches, nevertheless "weak(1[0:$] ##1 0)" is a tautology. 

Maybe I will just put a note stating the equivalency between the
sequences and first match. It does give some intuition

Doron
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Received on Mon Dec 3 03:52:17 2007

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