#19463: A coding/two_weight_db module
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Reporter: | Owner:
ncohen | Status: needs_review
Type: | Milestone: sage-6.10
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers:
coding theory | Work issues:
Keywords: | Commit:
Authors: | ddcb9e33d277f1fe16512bc8933f47e3b22f17c0
Nathann Cohen | Stopgaps:
Report Upstream: N/A |
Branch: |
u/ncohen/19463 |
Dependencies: |
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Description changed by ncohen:
Old description:
> This ticket creates a new coding/two_weight_db module.
>
> In it are stored all codes that were stored in
> graphs/strongly_regular_db.pyx. I expect that this file will change
> heavily, if we end up enriching our list of two weight codes for their
> own sake.
>
> A first commit moves out of the `strongly_regular_graph` function the
> code that builds the database of small strongly regular graphs. Which
> turned out to be a good idea later, as building this list actually takes
> some time in order to guess the parameters of the SRG from the 2-weight
> code.
>
> Nathann
New description:
This ticket creates a new coding/two_weight_db module.
In it are stored all codes that were stored in
graphs/strongly_regular_db.pyx. I expect that this file will change
heavily, if we end up enriching our list of two weight codes for their own
sake.
A first commit moves out of the `strongly_regular_graph` function the code
that builds the database of small strongly regular graphs. Which turned
out to be a good idea later, as building this list actually takes some
time in order to guess the parameters of the SRG from the 2-weight code.
Nathann
**Note** This ticket must not be merged while this note is here.
This branch *moves* a chunk of code (list of graphs) to a different place,
and checking that what is added matches what is removed must be done
carefully when no other ticket adding a construction is being merged.
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Ticket URL: <http://trac.sagemath.org/ticket/19463#comment:23>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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