#18141: special values of transcendental functions
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Reporter: rws | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.6
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by behackl):
Replying to [comment:8 rws]:
> This means we can have generalized Stieltjes constants and Hurwitz zeta
expansion with only minor additional work, right?
For the Zeta-function: yes, that is my impression. Regarding the expansion
of the Hurwitz-Zeta, I'm not quite sure: `Function_HurwitzZeta` is not a
`Ginac`-function, but a `BuiltinFunction`---and I don't know whether the
series expansion of this function can be influenced. Currently:
{{{
sage: hurwitz_zeta(s, x).series(s==1)
Traceback (most recent call last):
...
NotImplementedError: derivative with respect to first argument
}}}
But yes, of course: if it is possible to set the expansion in some place,
then we get the respective expansion of `hurwitz_zeta` for free, given
that we have the generalized Stiltjes-constants.
--
Ticket URL: <http://trac.sagemath.org/ticket/18141#comment:9>
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