Lipschitz continuity of the eigenfunctions on optimal sets for functionals with variable coefficients

Baptiste Trey

This paper is dedicated to the spectral optimization problem \begin{equation*} \min \big\{ λ_1(Ω)+\cdots+λ_k(Ω) + Λ|Ω| \ : \ Ω\subset D \text{ quasi-open} \big\} \end{equation*} wh…