3 papers
math.NA2026
A posteriori error bounds for pseudo-parabolic equations using semigroups
Martin Ossadnik, Torsten LinÃ
A class of pseudo-parabolic partial differential equations is considered. We derive a posteriori error bounds for approximations obtained by FEMs in space and a BDF formula in time…
math.NA2026
On norms and traces of the derivatives of the -projection error
Torsten LinÃ, Christos Xenophontos
We provide error bounds on the traces and norms of the derivative of the projection of an function onto the space of polynomials of degree . The bounds are ex…
math.NA2025
Tensor finite elements for smectic liquid crystals
Thomas Führer, Norbert Heuer, Torsten LinÃ
We present a tensor-based finite element scheme for a smectic-A liquid crystal model. We propose a simple Céa-type finite element projection in the linear case and prove its quasi…