Fast and High-Order Approximation of Parabolic Equations Using Hierarchical Direct Solvers and Implicit Runge-Kutta Methods

Ke Chen, Daniel Appelö, Tracy Babb, Per-Gunnar Martinsson

Communications on Applied Mathematics and Computation . 2026, (1): 248 -268 . DOI: 10.1007/s42967-024-00428-4