M Khalile - Journal of Mathematical Analysis and Applications, 2018 - Elsevier
Let Ω be a curvilinear polygon and Q Ω γ be the Laplacian in L 2 (Ω), Q Ω γ ψ=− Δ ψ, with the
Robin boundary condition∂ ν ψ= γ ψ, where∂ ν is the outer normal derivative and γ> 0. We …