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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

2019, Volume 482

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Computational methods and algorithms. Part XXXII


Similarity automorphisms of the space of Hankel matrices
A. K. Abdikalykov, Kh. D. Ikramov
5
Multigrid methods for solving two-dimensional boundary-value problems
Ya. L. Gurieva, V. P. Il'in, A. V. Petukhov
13
On the integral of a polynomial with multiple roots
A. E. Guterman, S. V. Danielyan
28
2-words: their graphs and matrices
A. E. Guterman, E. M. Kreines, N. V. Ostroukhova
45
Length of a direct sum of nonassociative algebras
A. E. Guterman, D. K. Kudryavtsev, O. V. Markova
73
Relation graphs of the split-sedenion algebra
S. A. Zhilina
87
An attempt of spectral theory for the $*$-congruence transformations
Kh. D. Ikramov
114
Rationally verifiable necessary conditions for Hermitian congruence of complex matrices
Kh. D. Ikramov
120
Congruence criteria for normal and conjugate-normal matrices
Kh. D. Ikramov
129
Iterative solution of saddle-point SLAEs
V. P. Il'in, G. Yu. Kazantsev
135
Commutativity of matrices up to a matrix factor
N. A. Kolegov, O. V. Markova
151
Nekrasov type matrices and upper bounds for their inverses
L. Yu. Kolotilina
169
New classes of nonsingular matrices and upper bounds for their inverses
L. Yu. Kolotilina
184
Some bounds for inverses involving matrix sparsity pattern
L. Yu. Kolotilina
201
Quadratic minimal splines with multiple nodes
E. K. Kulikov, A. A. Makarov
220
Maps that strongly preserve $\lambda$-scrambling matrices
A. M. Maksaev
231
$\pm1$-matrices with vanishing permanent
K. A. Taranin
244
Computation of characteristics of the regular finite spectrum of a singular multiparameter polynomial matrix
V. B. Khazanov
259
Computation of a minimal basis of the right null space of a singular multiparameter polynomial matrix
V. B. Khazanov
272
On some sets of $\sigma$-commuting ($\sigma\ne 0, \pm 1$) Toeplitz and Hankel matrices
V. N. Chugunov
288


© Steklov Math. Inst. of RAS, 2025