#15854: series of x^s, when s is symbolic
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Reporter: dkrenn | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.2
Component: symbolics | Keywords: symbolic, series, exponent
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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We have the following behaviour:
{{{
sage: var('s')
s
sage: (x^s).series(x, 0)
Order(1)
sage: (x^s).series(x, 1)
(0^s) + Order(x)
sage: (x^s).series(x, 2)
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
<ipython-input-4-5abc79662303> in <module>()
----> 1 (x**s).series(x, Integer(2))
/usr/opt/sage-6.1.1/local/lib/python2.7/site-
packages/sage/symbolic/expression.so in
sage.symbolic.expression.Expression.series
(sage/symbolic/expression.cpp:17596)()
ValueError: power::eval(): division by zero
}}}
This output is weird and definitely wrong (since the correct output
depends strongly on {{{s}}}.).
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Ticket URL: <http://trac.sagemath.org/ticket/15854>
Sage <http://www.sagemath.org>
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