Spectral analysis on ruled surfaces with combined Dirichlet and Neumann boundary conditions

Rafael T. Amorim, Alessandra A. Verri

Let $\Omega$ be an unbounded two dimensional strip on a ruled surface in ${\mathbb{R}}^d$, $d\ge 2$. Consider the Laplacian operator in $\Omega$ with Dirichlet and Neumann boundary conditions…