Spectral problems in boundary value problems constitute a fundamental area of applied mathematics and mathematical physics, where the focus lies on determining eigenvalues and corresponding ...
The operator L is elliptic and of second order in a domain Ω in RN. We consider the following boundary value problem: Lu = f in Ω and Bu = 0 on ∂ Ω, where B= ad/dn + β(d/dn is the conormal derivative ...