#8237: Sage does not recognize Maxima's complex infinity
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Reporter: robert.marik | Owner: burcin
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.3.4
Component: symbolics | Keywords:
Author: Burcin Erocal | Upstream: N/A
Reviewer: Karl-Dieter Crisman, Ross Kyprianou | Merged:
Work_issues: |
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Comment(by burcin):
Hi Ross,
It's likely that there are inconsistencies in the way infinity is handled
by pynac. For instance it definitely doesn't handle interactions with the
complex `I` well. I implemented support for infinity in pynac to provide a
basis for better series expansions and limit computations. However, I
didn't have time to actually use it for anything later.
I suggest we keep this issue focused on the conversion problem in the
maxima interface so it can be reviewed and merged quickly. You can open
separate tickets for the problems in pynac related to infinity. The fact
that assumptions are not passed on to pynac should be yet another ticket.
BTW, this article might help decide what behavior we expect w.r.t.
arithmetic involving infinity.
http://dx.doi.org/10.1016/j.jsc.2004.12.002
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8237#comment:10>
Sage <http://www.sagemath.org>
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