#19969: asymptotic expansion generator: singularity analysis (log-type)
-------------------------------------+-------------------------------------
Reporter: behackl | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.1
Component: asymptotic | Resolution:
expansions | Merged in:
Keywords: | Reviewers: Clemens Heuberger
Authors: Benjamin Hackl | Work issues:
Report Upstream: N/A | Commit:
Branch: u/cheuberg/asy | 7ad8f1626cd0647f8de9105442cbe730dc1232da
/SA-generator-log | Stopgaps:
Dependencies: #19532 |
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Changes (by cheuberg):
* status: needs_work => needs_review
* commit: c83baa89cb1f86815d85fd4cf9aa579ecc117d2a =>
7ad8f1626cd0647f8de9105442cbe730dc1232da
Comment:
Replying to [comment:4 cheuberg]:
> 1. I am not sure that three different implementations (beta=0, beta in
ZZ and beta>0, otherwise) are needed: the only difference is the range
over with `k`, `l`, `r` iterate and possibly the growth groups. But the
basic coefficients stay the same. Perhaps we should even abolish the
function `_sa_coefficients_e_` because collecting for a single
`Gamma(alpha)` is not really worthwhile. That would mean removing the
parameter `skip_constant_factor` which seems to be less important here.
done.
> 3. summation index `k` should be replaced by `r` in case beta not in ZZ
in order to have consistent naming of summation indices.
done.
This amounts to a major rewrite of the code (old case beta=0 as well as
new case). Please review.
----
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=f39f484721b7faa7a1fec1adc44d8ae424785c79
f39f484]||{{{Trac #19993: Arb: parse symbolic expressions}}}||
||[http://git.sagemath.org/sage.git/commit/?id=c1dd748d1421aa7d457fe70371c4b1892f605917
c1dd748]||{{{Merge branch 'arb/parse-symbolic' into t/19969/asy/SA-
generator-log}}}||
||[http://git.sagemath.org/sage.git/commit/?id=9488698d3c73d9435144fa239c80ac31ddb9712a
9488698]||{{{Trac 19969: remove parameter 'skip_constant_factor'}}}||
||[http://git.sagemath.org/sage.git/commit/?id=8938c974591fd6ef4cd609e646c0ca3ba4c69346
8938c97]||{{{Trac #19969: unique code for all three cases}}}||
||[http://git.sagemath.org/sage.git/commit/?id=e769bde575d26ddcebe6cd1f42bb3ed7d9cc9f6e
e769bde]||{{{Trac #19969: smaller coefficient rings if possible}}}||
||[http://git.sagemath.org/sage.git/commit/?id=feec36a5b6f4e5c2259bed7ec87f24a1212ccbc6
feec36a]||{{{Trac #19969: prefer coefficients as multiples of
1/Gamma(alpha)}}}||
||[http://git.sagemath.org/sage.git/commit/?id=7ad8f1626cd0647f8de9105442cbe730dc1232da
7ad8f16]||{{{Trac #19969: remove obsolete comment}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/19969#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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