#11894: problems with infinite sum
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Reporter: tmonteil | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-6.3
Component: calculus | Resolution:
Keywords: infinite sum, maxima | Merged in:
Authors: | Reviewers:
Report Upstream: Fixed upstream, in a later | Work issues:
stable release. | Commit:
Branch: | Stopgaps:
Dependencies: #13973 |
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Changes (by pbruin):
* dependencies: => #13973
* upstream: N/A => Fixed upstream, in a later stable release.
Comment:
The bug in item 4 is fixed upstream and after #13973 the code does
correctly raise an error:
{{{
sage: sum(1/(m^4 + 2*m^3 + 3*m^2 + 2*m)^2, m, 0, infinity)
#0: simp_gen_harmonic_number(exp__=1,x__=-1)
#1:
ratfun_to_psi(ratfun=1/(m^8+4*m^7+10*m^6+16*m^5+17*m^4+12*m^3+4*m^2),var=m,lo=0,hi=inf)
#2: simplify_sum(expr='sum(1/(m^4+2*m^3+3*m^2+2*m)^2,m,0,inf))
...
RuntimeError: ECL says: Error executing code in Maxima: Zero to negative
power computed.
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/11894#comment:5>
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