Spectral analysis of a class of IRK stage preconditioners for linear wave equations

Michal Outrata; Aman Rani

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arXiv · 2609.34620

Spectral analysis of a class of IRK stage preconditioners for linear wave equations

Michal Outrata·Aman Rani

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Abstract

We lay out the analysis of the ``Kronecker preconditioners'' adopted in [24] for the linear wave equations. Importantly, we deliver the analysis justifying the claims in~[24, Section 4.2] about these preconditioners and we unpack all of the necessary numerical background for a full understanding of the observed phenomena.

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Michal Outrata, Aman Rani. 2026-09-28. Spectral analysis of a class of IRK stage preconditioners for linear wave equations. https://arxiv.org/abs/2609.34620

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