Oliver A. Krzysik

According to our database, Oliver A. Krzysik authored at least 19 papers between 2019 and 2025.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2025

Optimal transfer operators in algebraic two-level methods for nonsymmetric and indefinite problems.

Oliver A. Krzysik, Ben S. Southworth, Golo A. Wimmer

CoRR, May, 2025

Multigrid Reduction-In-Time Convergence for Advection Problems: A Fourier Analysis Perspective.

Hans De Sterck, Stephanie Friedhoff, Oliver A. Krzysik, Scott P. MacLachlan

Numer. Linear Algebra Appl., February, 2025

Generalized Optimal AMG Convergence Theory for Stokes Equations Using Smooth Aggregation and Vanka Relaxation Strategies.

Ahsan Ali, James J. Brannick, Karsten Kahl, Oliver A. Krzysik, Jacob B. Schroder, Ben S. Southworth, Alexey Voronin

CoRR, January, 2025

Overlapping Schwarz methods are not anisotropy-robust multigrid smoothers.

Oliver A. Krzysik, Ben S. Southworth, Bobby Philip

CoRR, January, 2025

2024

Anderson Acceleration as a Krylov Method with Application to Convergence Analysis.

Hans De Sterck, Yunhui He, Oliver A. Krzysik

J. Sci. Comput., April, 2024

Constrained Local Approximate Ideal Restriction for Advection-Diffusion Problems.

Ahsan Ali, James J. Brannick, Karsten Kahl, Oliver A. Krzysik, Jacob B. Schroder, Ben S. Southworth

SIAM J. Sci. Comput., 2024

Parallel-in-time solution of hyperbolic PDE systems via characteristic-variable block preconditioning.

Hans De Sterck, Robert D. Falgout, Oliver A. Krzysik, Jacob B. Schroder

CoRR, 2024

First-order PDES for Graph Neural Networks: Advection And Burgers Equation Models.

Yifan Qu, Oliver A. Krzysik, Hans De Sterck, Omer Ege Kara

CoRR, 2024

Generalized Optimal AMG Convergence Theory for Nonsymmetric and Indefinite Problems.

Ahsan Ali, James J. Brannick, Karsten Kahl, Oliver A. Krzysik, Jacob B. Schroder, Ben S. Southworth

CoRR, 2024

Parallel-in-time solution of scalar nonlinear conservation laws.

Hans De Sterck, Robert D. Falgout, Oliver A. Krzysik, Jacob B. Schroder

CoRR, 2024

2023

Fast Multigrid Reduction-in-Time for Advection via Modified Semi-Lagrangian Coarse-Grid Operators.

Hans De Sterck, Robert D. Falgout, Oliver A. Krzysik

SIAM J. Sci. Comput., August, 2023

Efficient Multigrid Reduction-in-Time for Method-of-Lines Discretizations of Linear Advection.

Hans De Sterck, Robert D. Falgout, Oliver A. Krzysik, Jacob B. Schroder

J. Sci. Comput., July, 2023

On the convergence of restarted Anderson acceleration for symmetric linear systems.

Hans De Sterck, Oliver A. Krzysik, Adam Smith

CoRR, 2023

2022

Fast Solution of Fully Implicit Runge-Kutta and Discontinuous Galerkin in Time for Numerical PDEs, Part I: the Linear Setting.

Ben S. Southworth, Oliver A. Krzysik, Will Pazner, Hans De Sterck

SIAM J. Sci. Comput., 2022

Fast Solution of Fully Implicit Runge-Kutta and Discontinuous Galerkin in Time for Numerical PDEs, Part II: Nonlinearities and DAEs.

Ben S. Southworth, Oliver A. Krzysik, Will Pazner

SIAM J. Sci. Comput., 2022

2021

Optimizing multigrid reduction-in-time and Parareal coarse-grid operators for linear advection.

Hans De Sterck, Robert D. Falgout, Stephanie Friedhoff, Oliver A. Krzysik, Scott P. MacLachlan

Numer. Linear Algebra Appl., 2021

Fast parallel solution of fully implicit Runge-Kutta and discontinuous Galerkin in time for numerical PDEs, Part II: nonlinearities and DAEs.

Ben S. Southworth, Oliver A. Krzysik, Will Pazner

CoRR, 2021

Fast parallel solution of fully implicit Runge-Kutta and discontinuous Galerkin in time for numerical PDEs, Part I: the linear setting.

Ben S. Southworth, Oliver A. Krzysik, Will Pazner, Hans De Sterck

CoRR, 2021

2019

Optimizing MGRIT and Parareal coarse-grid operators for linear advection.

Hans De Sterck, Robert D. Falgout, Stephanie Friedhoff, Oliver A. Krzysik, Scott P. MacLachlan

CoRR, 2019