Published February 21, 2026 | Version v1
Software Open

Matlab-Code for "Structure-preserving Krylov Subspace Approximations for the Matrix Exponential of Hamiltonian Matrices: A Comparative Study"

  • 1. TU Braunschweig, Carl-Friedrich-Gauß-Fakultät
  • 2. ROR icon Technische Universität Braunschweig

Description

Run the script main_approxEndPhi.m to  generate the plots in Section 5 and the table in Section 6 of
 
 Structure-preserving Krylov Subspace Approximations for the Matrix 
 Exponential of Hamiltonian Matrices: A Comparative Study
 
 by Peter Benner, Heike Faßbender and Michel-Niklas Senn

 This script is a modified version of the script used to generate 
 the plots given in Section 4.3 of the thesis 

 A Potpourri of Structured Krylov Subspace Methods:
 Approximated Exponential Integrators, Symplectic Model Order Reduction  
 for Hamiltonian Systems, Krylov-Lagrangian Subspaces of Skew-Hamiltonian 
 Matrices
 by Michel-Niklas Senn

 original version written by Michel-Niklas Senn, March 2022
 see https://zenodo.org/records/17328559
 using MATLAB 2021Rb

 modified by Heike Faßbender, October 2025

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