Asymptotic spectral properties and preconditioning of an approximated nonlocal Helmholtz equation with fractional Laplacian and variable coefficient wave number μ

Συγγραφείς: Adriani, Andrea, Sormani, Rosita L, Tablino-Possio, Cristina, Krause, Rolf, Serra, Stefano

Πηγή: Linear Algebra and its Applications. 708:551-584

Θεματικοί όροι: Fractional derivatives, Helmholtz equations, Singular value and eigenvalue asymptotics, Generalized locally Toeplitz sequences, Spectral symbol, Preconditioning, Clustering, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-546221
https://doi.org/10.1016/j.laa.2024.12.015

Numerical solution of quantum Landau-Lifshitz-Gilbert equation

Συγγραφείς: Azimi Mousolou, Vahid, Mirzaei, Davoud

Πηγή: Computer Physics Communications. 319

Θεματικοί όροι: Quantum Landau-Lifshitz-Gilbert equation, Many-body quantum system, Quantum correlation and entanglement, Runge-Kutta methods, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis, Fysik, Physics

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-572161
https://doi.org/10.1016/j.cpc.2025.109911

Projection based summation-by-parts methods, embeddings and the pseudoinverse

Συγγραφείς: Olsson, Pelle, Eriksson, Gustav, Mattsson, Ken, 1970

Πηγή: Journal of Computational Physics. 524

Θεματικοί όροι: Finite difference methods, High-order accuracy, Stability, Boundary treatment, Projection method, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-546211
https://doi.org/10.1016/j.jcp.2024.113689

Matrix-less spectral approximation for large structured matrices

Συγγραφείς: Barbarino, Giovanni, Claesson, Melker, Ekström, Sven-Erik, Doctor, 1977, Garoni, Carlo, Meadon, David, Speleers, Hendrik

Πηγή: BIT Numerical Mathematics. 65(1)

Θεματικοί όροι: Spectral approximation, Structured matrices, Discretization matrices, Generalized locally Toeplitz sequences, Eigenvalue expansion, Interpolation and extrapolation, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-546220
https://doi.org/10.1007/s10543-024-01041-w

Numerical simulation of the generalized modified Benjamin-Bona-Mahony equation using SBP-SAT in time

Συγγραφείς: Kjelldahl, Vilma, Mattsson, Ken, 1970

Πηγή: Journal of Computational and Applied Mathematics. 459

Θεματικοί όροι: Benjamin-Bona-Mahony equation, Non-linear, Initial boundary value problem, Summation-by-parts, Simultaneous-approximation-terms, Time integration, Boundary conditions, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-544243
https://doi.org/10.1016/j.cam.2024.116377

Numerical integration of mechanical forces in center-based models for biological cell populations

Συγγραφείς: Lötstedt, Per, Mathias, Sonja

Πηγή: eSSENCE - An eScience Collaboration Applied Mathematics and Computation. 486

Θεματικοί όροι: Center-based model, Time integration, Adaptivity, Gradient system, Numerical methods, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-540948
https://doi.org/10.1016/j.amc.2024.129069

Stability estimates for radial basis function methods applied to linear scalar conservation laws

Συγγραφείς: Tominec, Igor, Nazarov, Murtazo, Larsson, Elisabeth, 1971

Πηγή: Applied Mathematics and Computation. 485

Θεματικοί όροι: Radial basis function, Stability, Hyperbolic PDE, Kansa, RBF-PUM, RBF-FD, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-538285
https://doi.org/10.1016/j.amc.2024.129020

Approximating Moving Point Sources in Hyperbolic Partial Differential Equations

Συγγραφείς: Ljungberg Rydin, Ylva, 1992, Almquist, Martin

Πηγή: Journal of Scientific Computing. 103(2)

Θεματικοί όροι: Finite difference methods, Moving point source, Discrete delta distribution, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-464026
https://doi.org/10.1007/s10915-025-02834-z

A bound preserving cut discontinuous Galerkin method for one dimensional hyperbolic conservation laws

Συγγραφείς: Fu, Pei, Kreiss, Gunilla, Zahedi, Sara

Πηγή: ESAIM. 58(5):1651-1680

Θεματικοί όροι: Hyperbolic conservation laws, discontinuous Galerkin method, cut elements, satisfying maximum principle, positivity preserving, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-540124
https://doi.org/10.1051/m2an/2024042

GLT sequences and automatic computation of the symbol

Συγγραφείς: Sarathkumar, N. S., Serra-Capizzano, Stefano

Πηγή: Linear Algebra and its Applications. 697:468-486

Θεματικοί όροι: Singular value and eigenvalue, asymptotics, Generalized Locally Toeplitz, sequences, Spectral symbol, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-534797
https://doi.org/10.1016/j.laa.2024.03.024

Eigenvalue superposition for Toeplitz matrix-sequences with matrix order dependent symbols

Συγγραφείς: Bogoya, M., Grudsky, S. M., Serra-Capizzano, Stefano

Πηγή: Linear Algebra and its Applications. 697:487-527

Θεματικοί όροι: Eigenvalue expansion, Toeplitz matrix, Asymptotic expansion, Matrix-less method, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-534806
https://doi.org/10.1016/j.laa.2024.04.019

The β maps: Strong clustering and distribution results on the complex unit circle

Συγγραφείς: Schiavoni-Piazza, Alec J. A., Meadon, David, Serra, Stefano

Πηγή: Linear Algebra and its Applications. 697:365-383

Θεματικοί όροι: beta maps, Eigenvalue clustering, Toeplitz matrix and matrix-sequence, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-534773
https://doi.org/10.1016/j.laa.2024.05.014

Accuracy analysis for explicit-implicit finite volume schemes on cut cell meshes

Συγγραφείς: May, Sandra, Laakmann, Fabian

Πηγή: Communications in Applied Mathematics and Computational Science. 6(4):2239-2264

Θεματικοί όροι: Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-517781
https://doi.org/10.1007/s42967-023-00345-y

Spectral and norm estimates for matrix-sequences arising from a finite difference approximation of elliptic operators

Συγγραφείς: Coco, Armando, Ekström, Sven-Erik, Doctor, 1977, Russo, Giovanni, Serra-Capizzano, Stefano, Stissi, Santina Chiara

Πηγή: Linear Algebra and its Applications. 667:10-43

Θεματικοί όροι: Toeplitz matrix, Generating function and spectral symbol, Approximation of differential operators, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-500600
https://doi.org/10.1016/j.laa.2023.03.005

A note on the spectral analysis of matrix sequences via GLT momentary symbols: from all-at-once solution of parabolic problems to distributed fractional order matrices

Συγγραφείς: Bolten, Matthias, Ekström, Sven-Erik, Doctor, 1977, Furci, Isabella, Serra-Capizzano, Stefano

Πηγή: Electronic Transactions on Numerical Analysis. 58:136-163

Θεματικοί όροι: Toeplitz matrices, asymptotic distribution of eigenvalues and singular values, numerical solution of discretized equations for boundary value problems involving PDEs, fractional differential equations, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-495825
https://doi.org/10.1553/etna_vol58s136

A fault detection method based on partition of unity and kernel approximation

Συγγραφείς: Mirzaei, Davoud, Soodbakhsh, Navid

Πηγή: Numerical Algorithms. 93(4):1759-1794

Θεματικοί όροι: Partition of unity, Radial basis functions, Polyharmonic splines, Fault curves, Fault points, Principal component regression, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-495533
https://doi.org/10.1007/s11075-022-01488-4

Stage-parallel fully implicit Runge-Kutta implementations with optimal multilevel preconditioners at the scaling limit

Συγγραφείς: Munch, Peter, Dravins, Ivo, 1991, Kronbichler, Martin, Neytcheva, Maya, Dr, 1956

Πηγή: eSSENCE - An eScience Collaboration SIAM Journal on Scientific Computing. 46(2):71-96

Θεματικοί όροι: implicit Runge–Kutta methods, Radau quadrature, stage-parallel preconditioning, finite element methods, matrix-free methods, geometric multigrid, massively parallel, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: print

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-492935
https://doi.org/10.1137/22M1503270

Flipped structured matrix-sequences in image deblurring with reflective and anti-reflective boundary conditions

Συγγραφείς: Ferrari, Paola, Furci, Isabella, Serra, Stefano

Πηγή: Numerical Algorithms. 100(1):277-309

Θεματικοί όροι: Krylov iterative methods, Ill-posedness and regularization problems, Eigenvalue and singular value distributions, Imaging and signal processing, Reflective and anti-reflective BCs, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

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Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-546425

Generalized Locally Toeplitz matrix-sequences and approximated PDEs on submanifolds: the flat case

Συγγραφείς: Adriani, Andrea, Semplice, Matteo, Serra, Stefano

Πηγή: Linear and multilinear algebra. 73(9):1902-1924

Θεματικοί όροι: Toeplitz sequences, discretization of PDEs, spectral distribution of matrix-sequences, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: print

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-519367

An improved numerical scheme for coffee Extraction Yield evaluation

Συγγραφείς: Egidi, Nadaniela, Giacomini, Josephin, Larsson, Elisabeth, 1971, Perticarini, Alessia

Πηγή: eSSENCE - An eScience Collaboration Chaos, Solitons & Fractals. 188

Θεματικοί όροι: Advection-diffusion-reaction equation, Radial basis functions, Coffee percolation, Collocation method, Beräkningsvetenskap med inriktning mot numerisk analys, Scientific Computing with specialization in Numerical Analysis

Περιγραφή αρχείου: electronic

Σύνδεσμος πρόσβασης: https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-541311
https://doi.org/10.1016/j.chaos.2024.115625