Optimal solvers for linear systems with fractional powers of sparse SPD matrices S Harizanov, R Lazarov, S Margenov, P Marinov, Y Vutov
Numerical Linear Algebra with Applications 25 (5), e2167, 2018
94 2018 Analysis of numerical methods for spectral fractional elliptic equations based on the best uniform rational approximation S Harizanov, R Lazarov, S Margenov, P Marinov, J Pasciak
Journal of Computational Physics 408, 109285, 2020
72 2020 Stability of nonlinear subdivision and multiscale transforms S Harizanov, P Oswald
Constructive Approximation 31 (3), 359-393, 2010
49 2010 Epigraphical projection for solving least squares Anscombe transformed constrained optimization problems S Harizanov, JC Pesquet, G Steidl
Scale Space and Variational Methods in Computer Vision: 4th International …, 2013
46 2013 Sex estimation by size and shape of foramen magnum based on CT imaging D Toneva, S Nikolova, S Harizanov, I Georgiev, D Zlatareva, ...
Legal Medicine 35, 50-60, 2018
43 2018 A survey on numerical methods for spectral space-fractional diffusion problems S Harizanov, R Lazarov, S Margenov
Fractional Calculus and Applied Analysis 23 (6), 1605-1646, 2020
36 2020 Numerical solution of fractional diffusion–reaction problems based on BURA S Harizanov, R Lazarov, S Margenov, P Marinov
Computers & Mathematics with Applications 80 (2), 316-331, 2020
35 2020 Positive approximations of the inverse of fractional powers of SPD M-matrices S Harizanov, S Margenov
Control Systems and Mathematical Methods in Economics: Essays in Honor of …, 2018
28 2018 Mathematical and computer modeling of COVID-19 transmission dynamics in Bulgaria by time-depended inverse SEIR model S Margenov, N Popivanov, I Ugrinova, S Harizanov, T Hristov
AIP Conference Proceedings 2333 (1), 2021
27 2021 Facial soft tissue thicknesses in Bulgarian adults: relation to sex, body mass index and bilateral asymmetry D Toneva, S Nikolova, I Georgiev, S Harizanov, D Zlatareva, ...
Folia Morphologica 77 (3), 570-582, 2018
20 2018 Volume constrained 2-phase segmentation method utilizing a linear system solver based on the best uniform polynomial approximation of x− 1/2 S Harizanov, S Margenov, P Marinov, Y Vutov
Journal of Computational and Applied Mathematics 310, 115-128, 2017
16 2017 The best uniform rational approximation: Applications to solving equations involving fractional powers of elliptic operators S Harizanov, R Lazarov, S Margenov, P Marinov
arXiv preprint arXiv:1910.13865, 2019
12 2019 Comparison Analysis of Two Numerical Methods for Fractional Diffusion Problems Based on the Best Rational Approximations of t γ on [0, 1] S Harizanov, R Lazarov, S Margenov, P Marinov, J Pasciak
Advanced Finite Element Methods with Applications: Selected Papers from the …, 2019
12 2019 Spectral fractional Laplacian with inhomogeneous Dirichlet data: questions, problems, solutions S Harizanov, S Margenov, N Popivanov
Annual Meeting of the Bulgarian Section of SIAM, 123-138, 2018
12 2018 Reduced multiplicative (BURA-MR) and additive (BURA-AR) best uniform rational approximation methods and algorithms for fractional elliptic equations S Harizanov, N Kosturski, I Lirkov, S Margenov, Y Vutov
Fractal and Fractional 5 (3), 61, 2021
10 2021 A CT-study of the cranial suture morphology and its reorganization during the obliteration S Nikolova, D Toneva, I Georgiev, S Harizanov, D Zlatareva, ...
Collegium antropologicum 41 (2), 125-131, 2017
9 2017 Normal multi-scale transforms for curves S Harizanov, P Oswald, T Shingel
Foundations of Computational Mathematics 11, 617-656, 2011
9 2011 Rational approximations in robust preconditioning of multiphysics problems S Harizanov, I Lirkov, S Margenov
Mathematics 10 (5), 780, 2022
8 2022 Stability of nonlinear subdivision schemes and multiresolutions S Harizanov
Master's Thesis, Jacobs University, Bremen, 2007
7 2007 Comparison analysis on two numerical methods for fractional diffusion problems based on rational approximations of S Harizanov, R Lazarov, P Marinov, S Margenov, J Pasciak
arXiv preprint arXiv:1805.00711, 2018
6 2018