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

2021, Volume 18, Issue 2


Mathematical logic, algebra and number theory
Cohomology for the Lie algebra of type $A_2$ over a field of characteristic $2$
Sh. Sh. Ibraev, B. E. Turbayev
729
When a (dual-)Baer module is a direct sum of (co-)prime modules
M. R. Vedadi, N. Ghaedan
782
An example of a simple double Lie algebra
V. Gubarev
834
On spaces of functional clones
A. G. Pinus
901
Kleene star, subexponentials without contraction, and infinite computations
S. L. Kuznetsov
905
HKSS-completeness of modal algebras
N. Bazhenov
923
On read-once multifunctions in some base
I. K. Sharankhaev
1098
On facets of the Newton polytope for the discriminant of the polynomial system
I. A. Antipova, E. A. Kleshkova
1180
On some intervals in the lattice of ultraclones of rank $2$
S. A. Badmaev, A. E. Dugarov, I. V. Fomina, I. K. Sharankhaev
1210
On the join of Cross varieties of algebras
I. M. Isaev
1299
Extensions of the category $S-Act$
E. E. Skurikhin, A. A. Stepanova, A. G. Sukhonos
1332
On centers of soluble graphs
L. S. Kazarin, V. N. Tutanov
1517
On compressed zero-divisor graphs of finite commutative local rings
E. V. Zhuravlev, O. A. Filina
1531
Characterization of groups $E_6(3)$ and ${^2}E_6(3)$ by Gruenberg–Kegel graph
A. P. Khramova, N. V. Maslova, V. V. Panshin, A. M. Staroletov
1651
Special classes of positive preorders
S. A. Badaev, B. S. Kalmurzayev, N. K. Mukash, A. A. Khamitova
1657
The sum of orders of elements in nonabelian groups of odd order
A. A. Buturlakin, A. F. Tereshchenko
1698
On almost Engel $L$-varieties of vector spaces
A. V. Kislitsin
1705
Locally free subgroups of one-relator groups
A. I. Budkin
1757

Probability theory and mathematical statistics
Moderate deviations principle for independent random variables under sublinear expectations
Q. Q. Zhou, A. V. Logachov
817
On the accuracy of the poissonisation in the infinite occupancy scheme
M. Chebunin
1035
Remarks on invariance principle for one-parametric recursive residuals
A. Sakhanenko, A. Kovalevskii, A. Shelepova
1058
The moderate deviations principle for the trajectories of compound renewal processes on the half – line
A. V. Logachov, A. A. Mogulskii
1189
Asymptotics of sums of regression residuals under multiple ordering of regressors
M. G. Chebunin, A. P. Kovalevskii
1482
Harris ergodicity of a Split Transmission Control Protocol
S. G. Foss, M. G. Chebunin
1493
On representations and simulation of conditioned random walks on integer lattices
A. Sakhanenko, S. Foss
1556
On the asymptotics of the probability to stay above a non-increasing boundary for a non-homogeneous compound renewal process
A. D. Shelepova, A. I. Sakhanenko
1667

Geometry and topology
New proofs of infinitesimal rigidity of convex polyhedra and convex surfaces of revolution
I. Kh. Sabitov
740
On the uniqueness of $ \mathcal{I}$-limits of sequences
A. Blali, A. El Amrani, R. A. Hassani, A. Razouki
744
On PL embeddings of a 2-sphere in the 4-dimensional Euclidean space
D. V. Bolotov
867
On geometrical properties of continuous mappings which preserve orientation of simplices
V. A. Klyachin, N. A. Chåbanånko
985
On metrics admitting a discontinuum set of non-congruent immersions in $\mathbb R^3$
I. Kh. Sabitov
1023
The volume of a spherical antiprism with $S_{2n}$ symmetry
N. Abrosimov, B. Vuong
1165
Quandles, quasoids and projections
F. G. Korablev
1261
On semi-implicit numerical method for surface diffusion equation for triangulated surfaces
Yu. D. Efremenko
1367
Spatial graphs and their isotopy classification
V. M. Nezhinskij
1390
Continuous bijections of Borel subsets of the Sorgenfrey line on compact spaces
V. R. Smolin
1735

Discrete mathematics and mathematical cybernetics
On a class of vertex-transitive distance-regular covers of complete graphs
L. Yu. Tsiovkina
758
Path partitioning planar graphs with restrictions on short cycles
A. N. Glebov
975
Vertex-vertex color energy of a graph
S. Udupa, R. S. Bhat
1027
Distance-regular Terwilliger graphs with intersection arrays $\{50,42,1;1,2,50\}$ and $\{50,42,9;1,2,42\}$ do not exist
A. A. Makhnev, M. S. Nirova
1075
Minimum weight bases for quaternary Reed – Muller codes
F. I. Solov'eva
1358
Enumeration of strictly Deza graphs with at most $21$ vertices
S. V. Goryainov, D. I. Panasenko, L. V. Shalaginov
1423
Tight description of faces in torus triangulations with minimum degree 5
O. V. Borodin, A. O. Ivanova
1475
Error-tolerant ZZW-construction
Yu. V. Kosolapov, F. S. Pevnev
1506
Divisible design graphs with parameters $(4n,n+2,n-2,2,4,n)$ and $(4n,3n-2,3n-6,2n-2,4,n)$
L. Shalaginov
1742

Differentical equations, dynamical systems and optimal control
Reconstruction of a high-frequency source term of the wave equation from the asymptotics of the solution. Case of the Cauchy problem
E. V. Korablina, V. B. Levenshtam
827
Local solvability of an approximate problem for one-dimensional equations of dynamics of viscous compressible heat-conducting multifluids
A. E. Mamontov, D. A. Prokudin
931
A problem of normal oscillations of a system of bodies partially filled with ideal fluids under the action of an elastic damping device
D. A. Zakora, K. V. Forduk
997
On solvability of the boundary value problem for one pseudohyperbolic equation
L. N. Bondar, V. Nurmakhmatov
1046
On the stabilization of solutions to the initial-boundary value problem for the equations of dynamics of viscous compressible multicomponent media
D. A. Prokudin
1278
Finding the parameters of exponential estimates of solutions to the Cauchy problem for some systems of linear delay differential equations
N. V. Pertsev, K. K. Loginov
1307
On the existence of global solution of the system of equations of one-dimensional motion of a viscous liquid in a deformable viscous porous medium
M. A. Tokareva, A. A. Papin
1397
Positive solutions of $p$-Laplacian fractional differential equations with fractional derivative boundary condition
F. Haddouchi
1596
Invariant solutions of the gas dynamics equations from 4-parameter three-dimensional subalgebras containing all translations in space and pressure translation
D. T. Siraeva
1639
Estimates for solutions to one class of nonlinear nonautonomous systems with time-varying concentrated and distributed delays
I. I. Matveeva
1689
Solvability of a boundary value problem of chaotic dynamics of polymer molecule in the case of bounded interaction potential
V. N. Starovoitov
1714

Computational mathematics
Operator-orthoregressive methods for identifying coefficients of linear difference equations
A. A. Lomov
792
An application of the Chebyshev collocation method for the calculation of a mass flux in a long concentric annular channel
O. V. Germider, V. N. Popov
805
On the question of good conditionality of unsaturated quadrature formulas
V. N. Belykh
1083
Performance evaluation in stochastic process algebra dtsdPBC
I. V. Tarasyuk
1105
Iteratively regularized Gauss–Newton method in the inverse problem of ionospheric radiosonding
M. Yu. Kokurin, A. E. Nedopekin
1153
Optimization of nodes of composite quadrature formulas in the presence of a boundary layer
N. A. Zadorin
1201
The accuracy of numerical simulation of the acoustic wave propagations in a liquid medium based on Navier-Stokes equations
A. S. Kozelkov, O. L. Krutyakova, V. V. Kurulin, D. Yu. Strelets, M. A. Shishlenin
1238

Real, complex and functional analysis
Properties of extremal functions for $p$-capacity in $R^2$
A. S. Romanov
845
Application of integral transforms composition method (ITCM) to obtaining transmutations via integral transforms with Bessel functions in kernels
E. L. Shishkina, S. M. Sitnik, I. Jebabli
884
Inverse problem for the Sturm–Liouville equation with piecewise entire potential and piecewise constant weight on a curve
A. A. Golubkov
951
Extremality of $p$-harmonic functions in $R^2$
A. S. Romanov
1015
On the uniqueness of the solution to the Wiener–Hopf equation with probability kernel
M. S. Sgibnev
1146
The ray transform of symmetric tensor fields with incomplete projection data, I: The kernel of the ray transform
V. A. Sharafutdinov
1219
On finding the exact values of the constant in a $(1,q_2)$-generalized triangle inequality for Box-quasimetrics on $2$-step Carnot groups with $1$-dimensional center
A. V. Greshnov
1251
Best approximation of differentiation operators on the Sobolev class of functions analytic in a strip
R. R. Akopyan
1286
The problem on the measure of the union of line segments in the plane with restrictions on the set of their ends
A. E. Lipin
1319
An open mapping theorem for the Navier-Stokes type equations associated with the de Rham complex over ${\mathbb R}^n$
A. A. Shlapunov, N. Tarkhanov
1433
Periodic interpolating-orthogonal bases of MRA and wavelets
E. A. Pleshcheva
1467
Singular value decomposition of a normal Radon transform operator acting on 3D symmetric 2-tensor fields
A. P. Polyakova
1572
Some questions on the relationship of the factorization problem of matrix functions and the truncated Wiener—Hopf equation in the Wiener algebra
A. F. Voronin
1615
Reduction of the Kolmogorov inequality for a non negative part of the second derivative on the real line to the inequality for convex functions on an interval
N. S. Payuchenko
1625
The length and area principle for a function on an abstract surface over a domain of a Carnot group
M. V. Tryamkin
1720

Mathematical life
The Seventh International Olympiad in Cryptography: problems and solutions
A. A. Gorodilova, N. N. Tokareva, S. V. Agievich, C. Carlet, V. A. Idrisova, K. V. Kalgin, D. N. Kolegov, A. V. Kutsenko, N. Mouha, M. A. Pudovkina, A. N. Udovenko
Ā.4
4th International Conference Groups and quandles in low-dimensional topology, Tomsk, July 5 – 8, 2021
N. V. Abrosimov, V. G. Gorbounov, S. K. Nechaev, M. Singh, A. Yu. Vesnin
Ā.30
The Conference "Dynamics in Siberia", Novosibirsk, March 1 – 6, 2021
I. A. Dynnikov, A. E. Mironov, I. A. Taimanov, V. A. Timorin, A. Yu. Vesnin
Ā.44
In memory of Yuri Reshetnyak
S. S. Kutateladze
Ā.90
International S.B. Stechkin's Workshop-Conference on Function Theory dedicated to the 85th anniversary of Yu.N. Subbotin and N.I. Chernykh
V. V. Arestov, V. I. Berdyshev, A. G. Babenko, Yu. S. Volkov, M. V. Deikalova
Ā.93


© Steklov Math. Inst. of RAS, 2025