Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Pad\'e matrix pencil method with spurious pole information
  assimilation   We present a novel method for calculating Pad\'e approximants that is capable
of eliminating spurious poles placed at the point of development and of
identifying and eliminating spurious poles created by precision limitations
and/or noisy coefficients. Information contained in in the eliminated poles is
assimilated producing a reduced order Pad\'e approximant (PA). While the
[m+k/m] conformation produced by the algorithm is flexible, the m value of the
rational approximant produced by the algorithm reported here is determined by
the number of spurious poles eliminated. Spurious poles due to coefficient
noise/precision limitations are identified using an evidence-based filter
parameter applied to the singular values of a matrix comprised of the series
coefficients. The rational function poles are found directly by solving a
generalized eigenvalue problem defined by a matrix pencil. Spurious poles place
at the point of development, responsible in some algorithms for degeneracy, are
identified by their magnitudes. Residues are found by solving an overdetermined
linear matrix equation. The method is compared with the so-called Robust Pad\'e
Approximation (RPA) method and shown to be competitive on the problems studied.
By eliminating spurious poles, particularly in functions with branch points,
such as those encountered solving the power-flow problem, solution of these
complex-valued problems is made more reliable.

29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph