Scarabel, F. orcid.org/0000-0003-0250-4555 and Vermiglio, R. (Accepted: 2025) Equations with infinite delay: numerical stability via truncated Laguerre rules. In: IFAC-PapersOnLine. IFAC Joint SSSC, TDS, COSY 2025, 30 Jun - 02 Jul 2025, Gif-sur-Yvette, France. IFAC Secretariat ISSN: 2405-8963 EISSN: 2405-8963 (In Press)
Abstract
We propose a pseudospectral approximation of scalar linear equations with infinite delay using truncated Laguerre interpolation and quadrature rules. We study numerically the spurious eigenvalues introduced by the truncated approximation scheme compared to the complete scheme, and the convergence of the approximating eigenvalues to the true ones. The tests show that the convergence order of the truncated scheme is dominated by the quadrature error, and depends on the regularity of the integration kernel. The advantage of truncated rules is that, for kernels with limited regularity, a given tolerance can be achieved with lower-dimensional systems.
Metadata
Item Type: | Proceedings Paper |
---|---|
Authors/Creators: |
|
Keywords: | Infinite-dimensional Systems and Delays, Distributed Delays, Approximation Methods |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Aug 2025 08:55 |
Last Modified: | 06 Aug 2025 08:55 |
Published Version: | https://ifac.papercept.net/conferences/conferences... |
Status: | In Press |
Publisher: | IFAC Secretariat |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:230111 |