Re: header part of the value?

On Feb 28, 1:16 pm, Jan Hidders <hidd...@xxxxxxxxx> wrote:
The complexity and computability results indicate to which extent such
an algebra is possible and/or useful.

I was always skeptical of such work; maybe, the reason is that NP
completeness is not a part of standard math curriculum? NP complete
problems are all over the place in theoretic world, yet often a tiny
practically meaningful restriction of the model creates a wholly
different situation.

Besides, why do you think such
an algebra is necessary? What is necessary is that you can ask queries
and that there are algorithms to compute them. An algebra is just one
possible solution for that.

Because I'm not aware of any successful query engine that is not
algebraically based?
.

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