3 problems

For a screen with complex-valued $csigma$, suppose that Steklov eigenvalues exist. Using a complex Steklov parameter $clambda$, and extending the search domain to a region of the c…

Let $n(x)$ be a refractive index and let the scattering amplitude be measured with a fixed incident direction $d\in\mathbb{S}^{N-1}$, as a function of the observation direction and…

Let $n_1$ and $n_2$ be refractive indices, with corresponding scattering amplitudes $u_\infty^1(\hat x;d,k)$ and $u_\infty^2(\hat x;d,k)$. A measurement set is formally determined…