We consider the Bartnik extension problem, which originates from Bartink's definition of quasi-local mass. In this problem, we consider Bartnik boundary data on a topological 2-sphere (induced metric...
In this one-day workshop, we aim to bring together researchers and students based in Berlin and Brandenburg. The goal is to stimulate interactions between pure and applied mathematicians working in...
We consider the perturbation of the exterior differential by a closed one-form \(a\), \(d_a := d + a \wedge \cdot\), on a manifold with boundary. This gives rise to the perturbed (or twisted) de Rham...
