#13221: Limit should not depend on dummy variable.
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       Reporter:  kcrisman  |        Owner:  burcin
           Type:  defect    |       Status:  needs_work
       Priority:  minor     |    Milestone:  sage-pending
      Component:  calculus  |   Resolution:
       Keywords:            |    Merged in:
        Authors:            |    Reviewers:
Report Upstream:  N/A       |  Work issues:
         Branch:            |       Commit:
   Dependencies:            |     Stopgaps:
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Comment (by novoselt):

 And why should it be `(x,y)` instead of `(y,x)`? What if one depends on
 `(a, b)` and the other on `(alpha, beta)`, what should the result be? I
 think that in such cases the result should be a symbolic expression (which
 is unambiguous), but without any default order of variables. This is why
 polynomials in different variables cannot be added - ordering is non-
 canonical.

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Ticket URL: <http://trac.sagemath.org/ticket/13221#comment:10>
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