#10682: sum fails with lower bound != 0 or 1 (upgrade maxima to 5.26)
---------------------------------------------------------+------------------
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: domain issue, error handling in nintegral | Upstream: N/A
Reviewer: Jean-Pierre Flori, | Author:
Dima Pasechnik
Merged: | Dependencies:
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Comment(by jpflori):
Replying to [comment:57 dimpase]:
> OK, I am confused now - can we have a new public method to do the
simplification domain switching in the library, i.e. the equivalent of
`sage.calculus.calculus.maxima('domain:real')`, etc., or it would not work
due to a bug in the library interface? If the latter, it looks like one
can give it the
You're also confusing me now :)
I really do not like and understand how trac treats newline stuff, whence
my maybe confusing message above. I'll try to format that one better.
I'll also says a lot a lot of trivialities, but it's to be sure that we
all agree on what we want or do not want.
Fisrt, sage.calculus.calculus.maxima('domain: real') does work as intended
indeed.
If you think this is not public enough we can add a new method
"set_domain" in MaximaAbstract class which does the same thing:
{{{
def set_domain(self, domain):
r"""
Sets the working domain of this Maxima instance to `domain`.
"""
self('domain : "+domain)
}}}
or equivalently
{{{
def set_domain(self, domain):
r"""
Sets the working domain of this Maxima instance to `domain`.
"""
self.set('domain', domain)
}}}
with some basic doctesting.
In that form I doubt this is really much more useful than calling
sage.calculus.calculus.maxima(...).
Maybe you meant a function declared at the top level of
sage.calculus.calculus which does the same ?
It's maybe a little more meaningful.
What I meant about the Maxima Library interface bug is that we should be
able to access the "domain" variable of Maxima directly as an attribute of
the Sage object, so that one could replace the above method by
{{{
def set_domain(self, domain):
...
self.domain = domain
}}}
or if its a function in sage.calculus.calculus :
{{{
def set_domain(domain):
r"""
Sets the domain of the Maxima instance used by Sage for calculus to
`domain`
""""
maxima.domain = domain
}}}
This works for the pexpect interface but is broken for the library
interface.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10682#comment:59>
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