Content
Volume 18 (2021), N 2


Mathematical logic, algebra and number theory

Ibraev Sh. Sh., Turbayev B. T.
Cohomology for the Lie algebra of type A2 over a field of characteristic 2, pp. 729-739.
PDF DOI 10.33048/semi.2021.18.053

Ghaedan N., Vedadi M. R.
When a (dual-)Baer module is a direct sum of (co-)prime modules, pp. 782-791.
PDF DOI 10.33048/semi.2021.18.057

Gubarev V.
An example of a simple double Lie algebra, pp. 834-844.
PDF DOI 10.33048/semi.2021.18.062

Pinus A. G.
On spaces of functional clones, pp. 901-904. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.068

Kuznetsov S. L.
Kleene star, subexponentials without contraction, and infinite computations, pp. 905-922.
PDF DOI 10.33048/semi.2021.18.069

Bazhenov N.
HKSS-Completeness of modal algebras, pp. 923-930.
PDF DOI 10.33048/semi.2021.18.070

Sharankhaev I. K.
On read-once multifunctions in some base, pp. 1098-1104. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.084

Antipova I. A., Kleshkova E. A.
On facets of the Newton polytope for the discriminant of the polynomial system, pp. 1180-1188.
PDF DOI 10.33048/semi.2021.18.089

Badmaev S. A., Dugarov A. E., Fomina I. V., Sharankhaev I. K.
On some intervals in the lattice of ultraclones of rank 2, pp. 1210-1218. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.092

Isaev I. M.
On the join of Cross varieties of algebras, pp. 1299-1306. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.099

Skurikhin E. E., Stepanova A. A., Sukhonos A. G.
Extensions of the category S-Act, pp. 1332-1357.
PDF DOI 10.33048/semi.2021.18.102

Kazarin L. S., Tutanov V. N.
On centers of soluble graphs, pp. 1517-1530.
PDF DOI 10.33048/semi.2021.18.114

Zhuravlev E. V., Filina O. A.
On compressed zero-divisor graphs of finite commutative local rings, pp. 1531-1555.
PDF DOI 10.33048/semi.2021.18.115

Khramova A. P., Maslova N. V., Panshin V. V., Staroletov A. M.
Characterization of groups E6(3) and 2E6(3) by Gruenberg-Kegel graph, pp. 1651-1656.
PDF DOI 10.33048/semi.2021.18.124

Badaev S. A., Kalmurzayev B. S., Mukash N. K., Khamitova A. A.
Special classes of positive preorders, pp. 1657-1666.
PDF DOI 10.33048/semi.2021.18.125

Buturlakin A. A., Tereshchenko A. F.
The sum of orders of elements in nonabelian groups of odd order, pp. 1698-1704.
PDF DOI 10.33048/semi.2021.18.129

Kislitsin A. V.
On almost Engel L-varieties of vector spaces, pp. 1705-1713. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.130

Budkin A. I.
Locally free subgroups of one-relator groups, pp. 1757-1770.
PDF DOI 10.33048/semi.2021.18.135


Geometry and Topology

Sabitov I. Kh.
New proofs of infinitesimal rigidity of convex polyhedra and convex surfaces of revolution, pp. 740-743. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.054

Blali A., El Amrani A., Hassani R. A., Razouki A.
On the uniqueness of I-limits of sequences, pp. 744-757.
PDF DOI 10.33048/semi.2021.18.055

Bolotov D. V.
On PL embeddings of a 2-sphere in the 4-dimensional Euclidean space, pp. 867-883.
PDF DOI 10.33048/semi.2021.18.066

Klyachin V. A., Chebanenko N. A.
On geometrical properties of continuous mappings which preserve orientation of simplices, pp. 985-996. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.074

Sabitov I. Kh.
On metrics admitting a discontinuum set of non-congruent immersions in R3, pp. 1023-1026. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.077

Abrosimov N. V., Vuong B.
The volume of a spherical antiprism with S2n symmetry, pp. 1165-1179.
PDF DOI 10.33048/semi.2021.18.088

Korablev Ph. G.
Quandles, quasoids and projections, pp. 1261-1277. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.096

Efremenko Yu. D.
On semi-implicit numerical method for surface diffusion equation for triangulated surfaces, pp. 1367-1389.
PDF DOI 10.33048/semi.2021.18.104

Nezhinskij V. M.
Spatial graphs and their isotopy classification, pp. 1390-1396.
PDF DOI 10.33048/semi.2021.18.105

Smolin V. R.
Continuous bijections of Borel subsets of the Sorgenfrey line on compact spaces, pp. 1735-1741. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.133


Discrete mathematics and mathematical cybernetics

Tsiovkina L. Yu.
On a class of vertex-transitive distance-regular covers of complete graphs, pp. 758-781. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.056

Glebov A. N.
Path partitioning planar graphs with restrictions on short cycles, pp. 975-984. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.073

Sayinath Udupa, Bhat R. S.
Vertex-vertex color energy of a graph, pp. 1027-1034.
PDF DOI 10.33048/semi.2021.18.078

Makhnev A. A., Nirova M. S.
Distance-regular Terwilliger graphs with intersection arrays {50,42,1;1,2,50} and {50,42,9;1,2,42} do not exist, pp. 1075-1082. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.082

Solov'eva F. I.
Minimum weight bases for quaternary Reed-Muller codes, pp. 1358-1366.
PDF DOI 10.33048/semi.2021.18.103

Goryainov S. V., Panasenko D. I., Shalaginov L. V.
Enumeration of strictly Deza graphs with at most 21 vertices, pp. 1423-1432.
PDF DOI 10.33048/semi.2021.18.107

Borodin O. V., Ivanova A. O.
Tight description of faces in torus triangulations with minimum degree 5, pp. 1475-1481.
PDF DOI 10.33048/semi.2021.18.110

Kosolapov Yu. V., Pevnev F. S.
Error-tolerant ZZW-construction, pp. 1506-1516.
PDF DOI 10.33048/semi.2021.18.113

Shalaginov L.
Divisible design graphs with parameters (4n,n+2,n-2,2,4,n) and (4n,3n-2,3n-6,2n-2,4,n), pp. 1742-1756.
PDF DOI 10.33048/semi.2021.18.134


Computational mathematics

Lomov A. A.
Operator-orthoregressive methods for identifying coefficients of linear difference equations, pp. 792-804.
PDF DOI 10.33048/semi.2021.18.058

Germider O. V., Popov V. N.
An application of the Chebyshev collocation method for the calculation of a mass flux in a long concentric annular channel, pp. 805-816.
PDF DOI 10.33048/semi.2021.18.059

Belykh V. N.
On the question of good conditionality of unsaturated quadrature formulas, pp. 1083-1097. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.083

Tarasyuk I. V.
Performance evaluation in stochastic process algebra dtsdPBC, pp. 1105-1145.
PDF DOI 10.33048/semi.2021.18.085

Kokurin M. Yu., Nedopekin A. E.
Iteratively regularized Gauss-Newton method in the inverse problem of ionospheric radiosonding, pp. 1153-1164.
PDF DOI 10.33048/semi.2021.18.087

Zadorin N. A.
Optimization of nodes of composite quadrature formulas in the presence of a boundary layer, pp. 1201-1209.
PDF DOI 10.33048/semi.2021.18.091

Kozelkov A. S., Krutyakova O. L., Kurulin V. V., Strelets D. Yu., Shishlenin M. A.
The accuracy of numerical simulation of the acoustic wave propagations in a liquid medium based on Navier-Stokes equations, pp. 1238-1250.
PDF DOI 10.33048/semi.2021.18.094


Probability theory and mathematical statistics

Zhou Q. Q., Logachov A. V.
Moderate deviations principle for independent random variables under sublinear expectations, pp. 817-826.
PDF DOI 10.33048/semi.2021.18.060

Chebunin M.
On the accuracy of the poissonisation in the infinite occupancy scheme, pp. 1035-1045.
PDF DOI 10.33048/semi.2021.18.079

Sakhanenko A. I., Kovalevskii A. P., Shelepova A. D.
Remarks on invariance principle for one-parametric recursive residuals, pp. 1058-1074.
PDF DOI 10.33048/semi.2021.18.081

Logachov A. V., Mogulskii A. A.
The moderate deviations principle for the trajectories of compound renewal processes on the half-line, pp. 1189-1200.
PDF DOI 10.33048/semi.2021.18.090

Chebunin M. G., Kovalevskii A. P.
Asymptotics of sums of regression residuals under multiple ordering of regressors, pp. 1482-1492.
PDF DOI 10.33048/semi.2021.18.111

Foss S. G., Chebunin M. G.
Harris ergodicity of a Split Transmission Control Protocol, pp. 1493-1505. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.112

Sakhanenko A., Foss S.
On representations and simulation of conditioned random walks on integer lattices, pp. 1556-1571.
PDF DOI 10.33048/semi.2021.18.116

Shelepova A. D., Sakhanenko A. I.
On the asymptotics of the probability to stay above a non-increasing boundary for a non-homogeneous compound renewal process, pp. 1667-1688. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.127


Differential equations, dynamical systems and optimal control

Korablina E. V., Levenshtam V. B.
Reconstruction of a high-frequency source term of the wave equation from the asymptotics of the solution. Case of the Cauchy problem, pp. 827-833.
PDF DOI 10.33048/semi.2021.18.061

Mamontov A. E., Prokudin D. A.
Local solvability of an approximate problem for one-dimensional equations of dynamics of viscous compressible heat-conducting multifluids, pp. 931-950. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.071

Zakora D. A., Forduk K. V.
A problem of normal oscillations of a system of bodies partially filled with ideal fluids under the action of an elastic damping device, pp. 997-1014.
PDF DOI 10.33048/semi.2021.18.075

Bondar L. N., Nurmakhmatov V. S.
On solvability of the boundary value problem for one pseudohyperbolic equation, pp. 1046-1057.
PDF DOI 10.33048/semi.2021.18.080

Prokudin D. A.
On the stabilization of solutions to the initial-boundary value problem for the equations of dynamics of viscous compressible multicomponent media, pp. 1278-1285. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.097

Pertsev N. V., Loginov K. K.
Finding the parameters of exponential estimates of solutions to the Cauchy problem for some systems of linear delay differential equations, pp. 1307-1318. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.100

Tokareva M. A., Papin A. A.
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, pp. 1397-1422.
PDF DOI 10.33048/semi.2021.18.106

Haddouchi F.
Positive solutions of p-Laplacian fractional differential equations with fractional derivative boundary condition, pp. 1596-1614.
PDF DOI 10.33048/semi.2021.18.118

Siraeva D. T.
Invariant solutions of the gas dynamics equations from 4-parameter three-dimensional subalgebras containing all translations in space and pressure translation, pp. 1639-1650.
PDF DOI 10.33048/semi.2021.18.123

Matveeva I. I.
Estimates for solutions to one class of nonlinear nonautonomous systems with time-varying concentrated and distributed delays, pp. 1689-1697.
PDF DOI 10.33048/semi.2021.18.128

Starovoitov V. N.
Solvability of a boundary value problem of chaotic dynamics of polymer molecule in the case of bounded interaction potential, . 1714-1719.
PDF DOI 10.33048/semi.2021.18.131


Real, complex and functional analysis

Romanov A. S.
Properties of extremal functions for p-capacity in R2, pp. 845-866. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.064

Shishkina E. L., Sitnik S. M., Jebabli I.
Application of Integral Transforms Composition Method (ITCM) to obtaining transmutations via integral transforms with Bessel functions in kernels, pp. 884-900.
PDF DOI 10.33048/semi.2021.18.067

Golubkov A. A.
Inverse problem for the Sturm-Liouville equation with piecewise entire potential and piecewise constant weight on a curve, pp. 951-974.
PDF DOI 10.33048/semi.2021.18.072

Romanov A. S.
Extremality of p-harmonic functions in R2, pp. 1015-1022. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.076

Sgibnev M. S.
On the uniqueness of the solution to the WienerHopf equation with probability kernel, pp. 1146-1152.
PDF DOI 10.33048/semi.2021.18.086

Sharafutdinov V. A.
The ray transform of symmetric tensor fields with incomplete projection data, I: The kernel of the ray transform, pp. 1219-1237.
PDF DOI 10.33048/semi.2021.18.093

Greshnov A. V.
On finding the exact values of the constant in a (1,q2)-generalized triangle inequality for Box-quasimetrics on 2-step Carnot groups with 1-dimensional center, pp. 1251-1260.
PDF DOI 10.33048/semi.2021.18.095

Akopyan R. R.
Best approximation of differentiation operators on the Sobolev class of functions analytic in a strip, pp. 1286-1298. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.098

Lipin A. E.
The problem on the measure of the union of line segments in the plane with restrictions on the set of their ends, pp. 1319-1331. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.101

Shlapunov A. A., Tarkhanov N.
An open mapping theorem for the Navier-Stokes type equations associated with the de Rham complex over Rn, pp. 1433-1466.
PDF DOI 10.33048/semi.2021.18.108

Pleshcheva E. A.
Periodic interpolating-orthogonal bases of MRA and wavelets, pp. 1467-1474. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.109

Polyakova A. P.
Singular value decomposition of a normal Radon transform operator acting on 3D symmetric 2-tensor fields, . 1572-1595.
PDF DOI 10.33048/semi.2021.18.117

Voronin A. F.
Some questions on the relationship of the factorization problem of matrix functions and the truncated Wiener-Hopf equation in the Wiener algebra, pp. 1615-1624.
PDF DOI 10.33048/semi.2021.18.119

Payuchenko N. S.
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, pp. 1625-1638. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.120

Tryamkin M. V.
The length and area principle for a function on an abstract surface over a domain of a Carnot group, pp. 1720-1734. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.132


Mathematical life

Gorodilova A. A., Tokareva N. N., Agievich S. V., Carlet C., Idrisova V. A., Kalgin K. V., Kolegov D. N., Kutsenko A. V., Mouha N., Pudovkina M. A., Udovenko A. N.
The Seventh International Olympiad in Cryptography: problems and solutions, pp. 4-29.
PDF DOI 10.33048/semi.2021.18.063

Abrosimov N. V., Gorbounov V. G., Nechaev S. K., Singh M., Vesnin A. Yu.
4th International Conference Groups and quandles in low-dimensional topology, Tomsk, July 5-8, 2021, pp. 30-43.
PDF DOI 10.33048/semi.2021.18.065

Dynnikov I. A., Mironov A. E., Taimanov I. A., Timorin V. A., Vesnin A. Yu.
Conference "Dynamics in Siberia", Novosibirsk, March 1-6, 2021, pp. 44-89.
PDF DOI 10.33048/semi.2021.18.121

Kutateladze S. S.
In memory of Yuri Reshetnyak, pp. 90-92. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.122

Arestov V. V., Berdyshev V. I., Babenko A. G., Volkov Yu. S., Deikalova M. V.
International S.B. Stechkin's Workshop-Conference on Function Theory dedicated to the 85th anniversary of Yu.N. Subbotin and N.I. Chernykh, pp. 93-108. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.126


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