A. Kaltenbach

collaborators

2 papers

math.NA2025

Error analysis for a Crouzeix-Raviart approximation of the obstacle problem

SÃ¶ren Bartels, Alex Kaltenbach

In the present paper, we study a Crouzeix-Raviart approximation of the obstacle problem, which imposes the obstacle constraint in the midpoints (i.e., barycenters) of the elements…

math.NA2024

Variational problems with gradient constraints: $A priori$ and $a posteriori$ error identities

Harbir Antil, SÃ¶ren Bartels, Sören Bartels +2

In this paper, on the basis of a (Fenchel) duality theory on the continuous level, we derive an $a posteriori$ error identity for arbitrary conforming approximations of a…

Error analysis for a Crouzeix-Raviart approximation of the obstacle problem

Variational problems with gradient constraints: A priori and a posteriori error identities

Variational problems with gradient constraints: $A priori$ and $a posteriori$ error identities