2 problems

Let $\Omega$ be a smooth bounded domain with Dirichlet-to-Neumann operator ${\mathcal D}$, and let $\varphi_h$ be an $L^2$-normalized Steklov eigenfunction satisfying … Write $u_h$…

Let $M$ be a smooth, connected and compact manifold of dimension $n\geq 2$ with non-empty smooth boundary $\partial M$, and let $u=u_\lambda$ be a Steklov eigenfunction with eigenv…