Tim Bohnlein

activity

20232025

collaborators

4 papers

math.AP2025

Meyers exponent rules the first-order approach to second-order elliptic boundary value problems

Pascal Auscher, Tim Böhnlein, Moritz Egert

The first-order approach to boundary value problems for second-order elliptic equations in divergence form with transversally independent complex coefficients in the upper half-spa…

math.AP2024

Bounded functional calculus for divergence form operators with dynamical boundary conditions

Tim Böhnlein, Moritz Egert, Joachim Rehberg

We consider divergence form operators with complex coefficients on an open subset of Euclidean space. Boundary conditions in the corresponding parabolic problem are dynamical, that…

math.FA2023

Hardy spaces adapted to elliptic operators on open sets

Sebastian Bechtel, Tim Böhnlein

Let $L = - div (A \nabla \cdot)$ be an elliptic operator defined on an open subset of $R^{d}$ , complemented with mixed boundary conditions. Under suitable assumption…

math.AP2023

Explicit improvements for $L^{p}$ -estimates related to elliptic systems

Tim Böhnlein, Moritz Egert

We give a simple argument to obtain $L^{p}$ -boundedness for heat semigroups associated to uniformly strongly elliptic systems on $R^{d}$ by using Stein interpolation…

Meyers exponent rules the first-order approach to second-order elliptic boundary value problems

Bounded functional calculus for divergence form operators with dynamical boundary conditions

Hardy spaces adapted to elliptic operators on open sets

Explicit improvements for Lp-estimates related to elliptic systems

Explicit improvements for $L^{p}$ -estimates related to elliptic systems