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math.NA2023★ 1 cited
Stable least-squares space-time boundary element methods for the wave equation
Daniel Hoonhout, Richard Löscher, Olaf Steinbach +1
In this paper, we recast the variational formulation corresponding to the single layer boundary integral operator for the wave equation as a minimization problem…
math.NA2023
Parallel iterative solvers for discretized reduced optimality systems
Ulrich Langer, Richard Löscher, Olaf Steinbach +1
We propose, analyze, and test new iterative solvers for large-scale systems of linear algebraic equations arising from the finite element discretization of reduced optimality syste…
math.NA2023
Adaptive least-squares space-time finite element methods
Christian Köthe, Richard Löscher, Olaf Steinbach
We consider the numerical solution of an abstract operator equation by using a least-squares approach. We assume that is an isomorphism, and that $A : Y \to Y…