Asymptotic spectral properties and preconditioning of an approximated nonlocal Helmholtz equation with Caputo fractional Laplacian and variable coefficient wave number $\mu$

zbMatharXiv:2402.10569MaRDI QIDQ6522094

Stefano Serra Capizzano, Cristina Tablino-Possio, Rosita Luisa Sormani, Andrea Adriani, Rolf H. Krause

Publication date: 1 January 1

Mathematics Subject Classification ID

Eigenvalues, singular values, and eigenvectors (15A18) Toeplitz operators, Hankel operators, Wiener-Hopf operators (47B35) Numerical solution of discretized equations for boundary value problems involving PDEs (65N22) Preconditioners for iterative methods (65F08) Fractional partial differential equations (35R11)

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