Opened 8 months ago

Last modified 4 months ago

#16176 new defect

Incorrect sum simplification leads to error

Reported by: kcrisman Owned by:
Priority: major Milestone: sage-6.4
Component: calculus Keywords:
Cc: Merged in:
Authors: Reviewers:
Report Upstream: Fixed upstream, but not in a stable release. Work issues:
Branch: Commit:
Dependencies: Stopgaps:

Description

See this sage-support thread.

n = var('n')
sum(log(1-1/n^2),n,2,oo)

The error is in Maxima's simplify_sum.

Change History (4)

comment:1 Changed 8 months ago by kcrisman

  • Report Upstream changed from Not yet reported upstream; Will do shortly. to Reported upstream. Developers acknowledge bug.

Upstream report at Maxima bug 2722.

comment:2 Changed 8 months ago by kcrisman

  • Report Upstream changed from Reported upstream. Developers acknowledge bug. to Fixed upstream, but not in a stable release.

Gotta love distributed work. Already committed in upstream. (I haven't checked it works but anyway there is a commit in the right file.)

So this (eventually) needs a new Maxima package and a doctest.

comment:3 Changed 8 months ago by vbraun_spam

  • Milestone changed from sage-6.2 to sage-6.3

comment:4 Changed 4 months ago by vbraun_spam

  • Milestone changed from sage-6.3 to sage-6.4
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