[Numpy-discussion] poly class question

Charles R Harris charlesr.harris@gmail....
Fri Oct 2 12:30:10 CDT 2009

On Fri, Oct 2, 2009 at 11:08 AM, <josef.pktd@gmail.com> wrote:

> Is there a way in numpy (or scipy) to get an infinite expansion for
> the inverse of a polynomial (for a finite number of terms)
> np.poly1d([ -0.8, 1])**(-1)
> application for example the MA representation of an AR(1)
Hmm, I've been working on a chebyshev class and division of a scalar by a
chebyshev series is
expressly forbidden, but it could be included if a good interface is
proposed. Same would go for polynomials.

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