#16721: symbolic gcd()
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Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.3
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps: todo
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Comment (by nbruin):
Replying to [comment:8 kbaut]:
> I'm wondering if the implementation of `sum` is actually the issue.
`sum(expression, v, a, b)` evaluates the expression before substituting
values for the variable, unlike `sum(expression for v in range(a, b+1))`.
Should they be equivalent?
That they are different is a rather fundamental python language feature.
Making the two behave equivalently would require rather major surgery on
the python parser or some nasty trickery in preparsing.
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Ticket URL: <http://trac.sagemath.org/ticket/16721#comment:9>
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