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R. Weigel

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Jul 2026

Adaptive Krylov Methods for Low-Rank Exponential Integrators

KIOPS-TT and RK2EXPINT-TT are developed as extensions of the original KIOPS and RK2EXPINT algorithms, reformulating the scheme of explicit exponential Runge-Kutta integrators for tensors and augmenting the stiffness tensor to compute linear combinations of $\varphi$-functions acting on tensors through a single evaluation of the exponential function using Krylov subspace methods.

R. Weigel, Tom-Christian Riemer, Martin Stoll · 0 citations

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