Coercive space-time finite element methods for initial boundary value problems
O Steinbach, M Zank - 2020 - epub.oeaw.ac.at
We propose and analyse new space-time Galerkin-Bubnov-type finite element formulations
of parabolic and hyperbolic second-order partial differential equations in finite time intervals. …
of parabolic and hyperbolic second-order partial differential equations in finite time intervals. …
A stabilized space–time finite element method for the wave equation
O Steinbach, M Zank - Chemnitz Fine Element Symposium, 2017 - Springer
We consider a space–time variational formulation Space–time variational formulation of the
wave equation Wave equation by including integration by parts also in the time variable. A …
wave equation Wave equation by including integration by parts also in the time variable. A …
[HTML][HTML] A generalized inf–sup stable variational formulation for the wave equation
O Steinbach, M Zank - Journal of Mathematical Analysis and Applications, 2022 - Elsevier
In this paper, we consider a variational formulation for the Dirichlet problem of the wave
equation with zero boundary and initial conditions, where we use integration by parts in space …
equation with zero boundary and initial conditions, where we use integration by parts in space …
The Newmark method and a space–time FEM for the second–order wave equation
M Zank - … ENUMATH 2019: European Conference, Egmond aan …, 2020 - Springer
For the second–order wave equation, we compare the Newmark Galerkin method with a
stabilised space–time finite element method for tensor–product space–time discretisations with …
stabilised space–time finite element method for tensor–product space–time discretisations with …
Integral representations and quadrature schemes for the modified Hilbert transformation
M Zank - Computational Methods in Applied Mathematics, 2023 - degruyter.com
We present quadrature schemes to calculate matrices where the so-called modified Hilbert
transformation is involved. These matrices occur as temporal parts of Galerkin finite element …
transformation is involved. These matrices occur as temporal parts of Galerkin finite element …
Efficient direct space-time finite element solvers for parabolic initial-boundary value problems in anisotropic Sobolev spaces
U Langer, M Zank - SIAM Journal on Scientific Computing, 2021 - SIAM
We consider a space-time variational formulation of parabolic initial-boundary value problems
in anisotropic Sobolev spaces in combination with a Hilbert-type transformation. This …
in anisotropic Sobolev spaces in combination with a Hilbert-type transformation. This …
An exact realization of a modified Hilbert transformation for space-time methods for parabolic evolution equations
M Zank - Computational Methods in Applied Mathematics, 2021 - degruyter.com
We present different possibilities of realizing a modified Hilbert type transformation as it is
used for Galerkin–Bubnov discretizations of space-time variational formulations for parabolic …
used for Galerkin–Bubnov discretizations of space-time variational formulations for parabolic …
Higher-Order Space-Time Continuous Galerkin Methods for the Wave Equation
M Zank - arXiv preprint arXiv:2102.07562, 2021 - arxiv.org
We consider a space-time variational formulation of the second-order wave equation, where
integration by parts is also applied with respect to the time variable. Conforming tensor-…
integration by parts is also applied with respect to the time variable. Conforming tensor-…
Numerical results for an unconditionally stable space-time finite element method for the wave equation
R Löscher, O Steinbach, M Zank - Domain Decomposition Methods in …, 2023 - Springer
For simplicity, we only consider homogeneous boundary and initial conditions, but inhomogeneous
data or other types of boundary conditions can be handled as well. To compute an …
data or other types of boundary conditions can be handled as well. To compute an …
A Space-Time Continuous Galerkin Finite Element Method for Linear Schr\" odinger Equations
M Zank - arXiv preprint arXiv:2504.07269, 2025 - arxiv.org
We introduce a space-time finite element method for the linear time-dependent Schr\"odinger
equation with Dirichlet conditions in a bounded Lipschitz domain. The proposed …
equation with Dirichlet conditions in a bounded Lipschitz domain. The proposed …