2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87092A high-frequency asymptotics of the symbol of the Dirichlet-to-Neumann map, treated as a periodic pseudodifferential operator, in 2D diffraction problems is discussed. Numerical results support a conjecture on a universal limit shape of the symbol.8 pp., 8 figuresComputational PhysicsOpticsNumerical study of high frequency asymptotics of the symbol of the Dirichlet-to-Neumann operator in 2D diffraction problemstext