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Home -> Community -> Usenet -> comp.databases.theory -> Re: Relational lattice completeness
vc wrote:
> Speaking of the OP question, is he trying to show that his query
> language is as expressive/'complete' as RA/RC, more
> expressive/'complete', or his question is about something completely
> different ?
It's not clear who you assume the Delphi is. Jan asked about the completeness first. After the round of exchanges I once again think that speaking about completeness of axiom system is premature until we establish the axiom system in the first place
http://www.phil.cam.ac.uk/research_fellows/leng/b_theories3_02.pdf
For relational lattice we know the interpretation. Can we speak of the completeness of a theory by just knowing the set of interpretations?
As for Jan's equality expression derivation rule, does the Spight criteria (which is an implication in meta language) fit there? Received on Fri Apr 07 2006 - 10:56:21 CDT
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