You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
<span id="GaraiEtAl2026b">G. Garai and N. Chamakuri, “Exp-ParaDiag: Time-Parallel Exponential Integrators for Parabolic PDEs,” arXiv:2603.04350v1 [math.NA], 2026 [Online]. Available at: <a href="https://arxiv.org/abs/2603.04350v1" target="_blank">https://arxiv.org/abs/2603.04350v1</a></span>
This paper introduces Exp-ParaDiag, a novel time-parallel method that combines the strength of exponential integrators into the ParaDiag framework. We develop and analyze Exp-ParaDiag based on first and second order accurate exponential integrators. We establish the convergence of the proposed methods both as preconditioned fixed-point iterations and as precon- ditioners within the GMRES framework. Furthermore, we extend the Exp-ParaDiag formulation to achieve sixth-order temporal accuracy using exponential integrators. The proposed approach is also generalized to nonlinear problems, for which convergence is rigorously demonstrated. A series of numerical experiments is presented to validate the theoretical results and to illustrate the robustness and efficiency of the developed methods.
0 commit comments