A robust second-order low-rank BUG integrator based on the midpoint rule

G Ceruti, L Einkemmer, J Kusch, C Lubich - BIT Numerical Mathematics, 2024 - Springer
Dynamical low-rank approximation has become a valuable tool to perform an on-the-fly
model order reduction for prohibitively large matrix differential equations. A core ingredient …

A review of low-rank methods for time-dependent kinetic simulations

L Einkemmer, K Kormann, J Kusch… - arXiv preprint arXiv …, 2024 - arxiv.org
Time-dependent kinetic models are ubiquitous in computational science and engineering.
The underlying integro-differential equations in these models are high-dimensional …

A hierarchical dynamical low-rank algorithm for the stochastic description of large reaction networks

L Einkemmer, J Mangott, M Prugger - arXiv preprint arXiv:2407.11792, 2024 - arxiv.org
The stochastic description of chemical reaction networks with the kinetic chemical master
equation (CME) is important for studying biological cells, but it suffers from the curse of …

Reduced Augmentation Implicit Low-rank (RAIL) integrators for advection-diffusion and Fokker-Planck models

J Nakao, JM Qiu, L Einkemmer - arXiv preprint arXiv:2311.15143, 2023 - arxiv.org
This paper introduces a novel computational approach termed the Reduced Augmentation
Implicit Low-rank (RAIL) method by investigating two predominant research directions in low …

Automatic partitioning for the low-rank integration of stochastic Boolean reaction networks

L Einkemmer, J Mangott, M Prugger - arXiv preprint arXiv:2501.04157, 2025 - arxiv.org
Boolean reaction networks are an important tool in biochemistry for studying mechanisms in
the biological cell. However, the stochastic formulation of such networks requires the …

Second-order robust parallel integrators for dynamical low-rank approximation

J Kusch - arXiv preprint arXiv:2403.02834, 2024 - arxiv.org
Due to its reduced memory and computational demands, dynamical low-rank approximation
(DLRA) has sparked significant interest in multiple research communities. A central …

A stable multiplicative dynamical low-rank discretization for the linear Boltzmann-BGK equation

L Baumann, L Einkemmer, C Klingenberg… - arXiv preprint arXiv …, 2024 - arxiv.org
The numerical method of dynamical low-rank approximation (DLRA) has recently been
applied to various kinetic equations showing a significant reduction of the computational …

Bounds and Low-Rank Approximation for Controlled Markov Processes

F Holtorf - 2024 - dspace.mit.edu
Stochastic processes have captivated scientific interest by balancing conceptual simplicity
with the ability to model complex, poorly understood, or even entirely unknown phenomena …