Optimal shapes for positivity preserving
Sascha Eichmann · arXiv (Cornell University) · 2024
We are looking for an optimal convex domain on which the boundary value problem $$\left\{\begin{array}{cc}(-Δ)^2 u_γ-γΔu_γ= f,& \mbox{ in }Ω\\ u_γ=\partial_νu_γ=0,& \mbox{ on }\partialΩ\end{array}\right.$$ admits a nonnegative solution for the most $γ$, if $f$ is a given nonnegative function.