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Found 416 Documents (Results 1–100)

An overview of polynomially computable characteristics of special interval matrices. (English) Zbl 07285515

Kosheleva, Olga (ed.) et al., Beyond traditional probabilistic data processing techniques: interval, fuzzy etc. methods and their applications. Dedicated to Vladik Kreinovich on the occasion of his 65th birthday. Cham: Springer. Stud. Comput. Intell. 835, 295-310 (2020).
MSC:  68T37
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Acceleration of BEM with the cross approximation for determination of boundary vorticity. (English) Zbl 1416.65320

Cheng, Alexander H.-D. (ed.) et al., Boundary elements and other mesh reduction methods XXXX. Selected papers based on the presentations at the 40th international conference (BEM/MRM), New Forest, UK, September 12–14 , 2017. Southampton: WIT Press. 137-147 (2018).
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An application of topology optimisation to defect identification in two-dimensional elastodynamics with the BEM and \(\mathcal{H}\) matrix method. (English) Zbl 1416.74098

Cheng, Alexander H.-D. (ed.) et al., Boundary elements and other mesh reduction methods XXXX. Selected papers based on the presentations at the 40th international conference (BEM/MRM), New Forest, UK, September 12–14 , 2017. Southampton: WIT Press. 73-82 (2018).
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New subclasses of the class of \( \mathcal H \)-matrices and related bounds for the inverses. (English. Russian original) Zbl 1376.15012

J. Math. Sci., New York 224, No. 6, 911-925 (2017); translation from Zap. Nauchn. Semin. POMI 453, 148-171 (2016).
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A numerical study on the compressibility of subblocks of Schur complement matrices obtained from discretized Helmholtz equations. (English) Zbl 1368.65220

Dimov, Ivan (ed.) et al., Numerical analysis and its applications. 6th international conference, NAA 2016, Lozenetz, Bulgaria, June 15–22, 2016. Revised selected papers. Cham: Springer (ISBN 978-3-319-57098-3/pbk; 978-3-319-57099-0/ebook). Lecture Notes in Computer Science 10187, 70-81 (2017).
MSC:  65N22 35J05 65F20
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Unitary automorphisms of the space of \((T+H)\)-matrices of order four. (English. Russian original) Zbl 1334.15070

Mosc. Univ. Comput. Math. Cybern. 39, No. 4, 153-156 (2015); translation from Vestn. Mosk. Univ., Ser. XV 2015, No. 4, 3-6 (2015).
MSC:  15B05
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Centrosymmetric property of unitary matrices that preserve the set of \((T+H)\)-matrices under similarity transformations. (English. Russian original) Zbl 1318.15013

Comput. Math. Math. Phys. 55, No. 5, 731-733 (2015); translation from Zh. Vychisl. Mat. Mat. Fiz. 55, No. 5, 739-741 (2015).
MSC:  15A86 15A21 15B05
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Some acceleration techniques for calculating the eigenvalues of normal Toeplitz matrices. (English. Russian original) Zbl 1327.65069

Comput. Math. Math. Phys. 54, No. 12, 1761-1764 (2014); translation from Zh. Vychisl. Mat. Mat. Fiz. 54, No. 12, 1835-1838 (2014).
MSC:  65F15 15B05
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