Package: polyMatrix
Version: 0.9.16
Title: Infrastructure for Manipulation Polynomial Matrices
Description: 
  Implementation of class "polyMatrix" for storing a matrix of polynomials and implements 
  basic matrix operations; including a determinant and characteristic polynomial.
  It is based on the package 'polynom' and uses a lot of its methods to implement matrix operations.
  This package includes 3 methods of triangularization of polynomial matrices:
  Extended Euclidean algorithm which is most classical but numerically unstable;
  Sylvester algorithm based on LQ decomposition;
  Interpolation algorithm is based on LQ decomposition and Newton interpolation.
  Both methods are described in 
  D. Henrion & M. Sebek, Reliable numerical methods for polynomial matrix triangularization,
  IEEE Transactions on Automatic Control (Volume 44, Issue 3, Mar 1999, Pages 497-508) <doi:10.1109/9.751344>
  and in 
  Salah Labhalla, Henri Lombardi & Roger Marlin, 
  Algorithmes de calcule de la reduction de Hermite d'une matrice a coefficients polynomeaux,
  Theoretical Computer Science (Volume 161, Issue 1-2, July 1996, Pages 69-92) <doi:10.1016/0304-3975(95)00090-9>.
Type: Package
Authors@R: c(
    person("Tamas", "Prohle", email="prohlet@ludens.elte.hu", role="aut"),
    person("Peter", "Prohle", email="prohlep@math.elte.hu", role="aut"),
    person("Nikolai", "Ryzhkov", email="namezys@gmail.com", role=c("aut", "cre"), comment = c(ORCID = "0000-0003-4896-280X")),
    person("Ildiko", "Laszlo", role="aut", comment = c(ORCID = "0000-0003-2324-8183")),
    person("Ulas Onat", "Alakent", role="ctb")
    )
Imports: methods, polynom, Matrix
License: MIT + file LICENSE
Depends: R (>= 4.0)
Suggests: testthat, withr
Repository: CRAN
URL: https://github.com/namezys/polymatrix
BugReports: https://github.com/namezys/polymatrix/issues
RoxygenNote: 7.1.1
NeedsCompilation: no
Packaged: 2021-07-18 13:48:59 UTC; namezys
Author: Tamas Prohle [aut],
  Peter Prohle [aut],
  Nikolai Ryzhkov [aut, cre] (<https://orcid.org/0000-0003-4896-280X>),
  Ildiko Laszlo [aut] (<https://orcid.org/0000-0003-2324-8183>),
  Ulas Onat Alakent [ctb]
Maintainer: Nikolai Ryzhkov <namezys@gmail.com>
Date/Publication: 2021-07-18 14:00:02 UTC
Built: R 4.6.0; ; 2026-04-27 11:39:07 UTC; unix
