#10682: Upgrade maxima to 5.26
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Reporter: fmaltey | Owner: burcin
Type: defect | Status: needs_info
Priority: critical | Milestone: sage-5.0
Component: symbolics | Keywords: maxima 5.26.0
binomial sum
Work_issues: | Upstream: N/A
Reviewer: Jean-Pierre Flori, Nils Bruin | Author: Dima Pasechnik
Merged: | Dependencies:
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Comment(by jpflori):
Last questions (I hope):
About the lines patched in wester.py, why did you add a semi-colon after
"n=var('n')" ?
And what do you mean exactly by "Maxima 5.26 does not do "just" simpify()
here." (sic)?
That now Maxima cannot simplify this expression when it is only told that
Re(x) >0 and Re(y)>0 and that we have to call simplify_exp() instead ?
I just check that this is indeed the case now and was not with Maxima's
5.24.0.p0 (ok this could be simply deduced from the doctest changes).
Is this a decision from Maxima's developers or a bug introduced recently?
if the former holds a pointer to where the change was made would be
welcome; if the latter holds, this should be reported upstream.
I guess that this is related to the domain stuff, because setting domain
back to real answer right away.
And it's strange that the assumptions is not needed anymore.
In fact looking into the simplify_exp code shows that maxima.eval('domain:
real$') is called before calling the radcan method which actually
simplifies the expression.
In particular, this might actually be a Maxima regression.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10682#comment:87>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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