#4477: [with patch; needs review] Allow exp() function for PowerSeriesRing
element
to compute with valid non-zero constant term
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Reporter: sengupta | Owner: somebody
Type: enhancement | Status: new
Priority: minor | Milestone: sage-3.2
Component: basic arithmetic | Keywords:
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The patch posted against this ticket enhances the exp() function for
PowerSeriesRing elements and allows it to compute with valid non-zero
constant terms in the power series.
Previously: f.exp() would return an error "Constant term must be zero" if
f[0] != 0
With the patch: f.exp() checks if f[0].exp() is at all defined and in the
case it is defined, whether f[0].exp() belongs to the base ring of f. If
both the conditions are satisfied, f.exp() is returned.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4477>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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