On 2019-04-09 11:59, Lawrence Paulson wrote:
I’m not sure how to do this without drastically restructuring Analysis.
Maybe we could have separate “top theories” (analogous to Main vs
Complex_Main) within Analysis. But then HOL-Analysis would still
depend on HOL-Algebra.
Or Homology could be a new development, importing Analysis, but with a
plan to move most of the Analysis material to other places later?
Homology needs only about a third of the Analysis theories.
I would vote for Larry's last suggestion as it seems that Analysis is
absorbing too much material,
also having all of Analysis to import Algebra is not so ideal.
I don't really have a feeling of how difficult it would be to move some
Analysis material elsewhere (hopefully not too difficult??) but it seems
like the best option to me
Best,
Angeliki
Larry
On 9 Apr 2019, at 11:49, Dr A. Koutsoukou-Argyraki <[email protected]>
wrote:
why not leave it as a separate Homology library that would be
importing both Analysis and Algebra for now?
It would then evolve into an Algebraic Topology library with time.
This would also reflect how a "real-life" math library would be
organised.
i.e. : I would prefer your suggestion of breaking up Analysis into
several modules some of which may need to port Homology (and thus
Algebra too)
and some not (if I correctly understand what you mean).
Could this be done at a second stage in time for Isabelle 2020 ?
Would that be feasible?
Best,
Angeliki
On 2019-04-09 11:14, Lawrence Paulson wrote:
I’ve completed porting HOL Light’s homology library, which many
people
have requested, and I’m trying to install it now into Analysis. This
will have one big consequence: Analysis will now import Algebra. This
in turn affects all theories that depend on Analysis.
An alternative may be to break up Analysis into several modules,
though I don’t see how that can be done in time for the next release.
Larry
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