English

Linear sparse differential resultant formulas

Classical Analysis and ODEs 2013-06-04 v3

Abstract

Let \cP\cP be a system of nn linear nonhomogeneous ordinary differential polynomials in a set UU of n1n-1 differential indeterminates. Differential resultant formulas are presented to eliminate the differential indeterminates in UU from \cP\cP. These formulas are determinants of coefficient matrices of appropriate sets of derivatives of the differential polynomials in \cP\cP, or in a linear perturbation \cPε\cP_{\varepsilon} of \cP\cP. In particular, the formula \dfres(\cP)\dfres(\cP) is the determinant of a matrix \cM(\cP)\cM(\cP) having no zero columns if the system \cP\cP is "super essential". As an application, if the system P\frak{P} is sparse generic, such formulas can be used to compute the differential resultant \dres(P)\dres(\frak{P}) introduced by Li, Gao and Yuan in (Proceedings of the ISSAC'2011).

Keywords

Cite

@article{arxiv.1112.3921,
  title  = {Linear sparse differential resultant formulas},
  author = {Sonia L. Rueda},
  journal= {arXiv preprint arXiv:1112.3921},
  year   = {2013}
}
R2 v1 2026-06-21T19:52:52.963Z