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JOURNALS // Sibirskie Èlektronnye Matematicheskie Izvestiya [Siberian Electronic Mathematical Reports] // Archive

2023, Volume 20, Issue 1


Mathematical logic, algebra and number theory
A note on joins and meets for positive linear preorders
N. Bazhenov, B. Kalmurzayev, M. Zubkov
1
Quasivarieties generated by small suborder lattices. I. Equational bases
O. A. Kadyrova, M. V. Schwidefsky
62
Generic polynomial algorithms for the knapsack problem in some matrix semigroups
A. N. Rybalov
100
Irreducible carpets of Lie type $B_l$, $C_l$ and $F_4$ over fields
A. O. Likhacheva, Ya. N. Nuzhin
124
Almost $n$-ary and almost $n$-aritizable theories
S. V. Sudoplatov
132
Limited combinatorial-selector sets
D. I. Ivanov, O. V. Ivanova
140
Distance-regular graph with intersection array $\{143,108,27;1,12,117\}$ does not exist
A. A. Makhnev, M. M. Isakova, A. A. Tokbaeva
207
Pretabularity and Craig's interpolation problem over the minimal logic
L. L. Maksimova, V. F. Yun
245
On two intervals in the lattice of partial ultraclones of rank $2$
S. A. Badmaev, A. E. Dugarov, I. V. Fomina, I. K. Sharankhaev
262
Undecidability of the submonoid membership problem for a sufficiently large finite direct power of the Heisenberg group
V. A. Roman'kov
293
The Jordan block structure of the images of unipotent elements in irreducible modular representations of classical algebraic groups of small dimensions
T. S. Busel, I. D. Suprunenko
306
The complexity of quasivariety lattices. II
M. V. Schwidefsky
501

Probability theory and mathematical statistics
On first-passage times for symmetric random walks without Lindeberg condition
A. I. Sakhanenko
86
Properties of boundary functionals for a random walk with stable jump distributions
V. I. Lotov
455
Critical Multitype Branching Processes on a Graph and the Model of the HIV Infection Development
V. A. Topchii, N. V. Pertsev
465

Geometry and topology
Lagrange spaces with changed Z. Shen square metric
Kumar Tripathi Brijesh, S. B. Chandak, V. K. Chaubey
17
Letter to the Editor
S. V. Agapov
47
Invariant Ricci solitons on three-dimensional nonunimodular Lie groups with a left-invariant Lorentzian metric and a semisymmetric connection
P. N. Klepikov, E. D. Rodionov, O. P. Khromova
48
Problem of shadow and surface of constant curvature
A. V. Kostin
150
Hopf-type theorems for $f$-neighbors
A. V. Malyutin, I. M. Shirokov
165
The volume of a trirectangular hyperbolic tetrahedron
N. Abrosimov, S. Stepanishchev
275

Discrete mathematics and mathematical cybernetics
On the preservation of the Wiener index of cubic graphs upon vertex removal
A. A. Dobrynin
285
On Binomial coefficients of real arguments
T. I. Fedoryaeva
514

Differentical equations, dynamical systems and optimal control
Iterative solution of the retrospective inverse heat conduction problem using the Poisson integral
V. I. Vasiliev, A. M. Kardashevsky
72
Spatially-Nonlocal Boundary Value Problems with the generalized Samarskii–Ionkin condition for quasi-parabolic equations
A. I. Kozhanov, A. M. Abdrakhmanov
110
Criterion for the Sobolev well-posedness of the Dirichlet problem for the Poisson equation in Lipschitz domains. II
A. I. Parfenov
211
On uniform asymptotics of solutions of second-order differential equations with meromorphic coefficients in a neighborhood of singular points
M. V. Korovina, H. A. Matevossian
251

Computational mathematics
Fluid flow simulation in a T-connection of square pipes using modern approaches to turbulence modeling
A. S. Kozelkov, E. S. Tyatyushkina, A. A. Kurkin, V. V. Kurulin, O. E. Kurkina, O. A. Kochetova
25
Numerical statistical modeling of optical radiation transfer in random crystal media
B. A. Kargin, Q. Mu, E. G. Kablukova
486

Real, complex and functional analysis
Uniform convergence on subspaces in von Neumann's ergodic theorem with continuous time
A. G. Kachurovskii, I. V. Podvigin, V. E. Todikov
183
On the dissymmetrization theorem
V. N. Dubinin
477


© Steklov Math. Inst. of RAS, 2025