#10075: Make log gamma symbolic
---------------------------+------------------------------------------------
Reporter: kcrisman | Owner: burcin
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.0
Component: symbolics | Keywords: sd35.5
Work_issues: | Upstream: N/A
Reviewer: | Author: Karen T. Kohl
Merged: | Dependencies:
---------------------------+------------------------------------------------
Comment(by kcrisman):
Burcin points out that
{{{
sage: log_gamma(-2.1)
NaN
}}}
is not good. Sage itself does
{{{
sage: log(gamma(-2.1))
1.53171380819509 + 3.14159265358979*I
}}}
but Wolfram Alpha says
{{{
1.53171... - 9.42478... i
}}}
so the branches seem to differ even there.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10075#comment:8>
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