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.
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Ghaedan N., Vedadi M. R.
When a (dual-)Baer module is a direct sum of (co-)prime modules, pp. 782-791.
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Gubarev V.
An example of a simple double Lie algebra, pp. 834-844.
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Pinus A. G.
On spaces of functional clones, pp. 901-904. [Russian, English abstract]
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Kuznetsov S. L.
Kleene star, subexponentials without contraction, and infinite computations, pp. 905-922.
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Bazhenov N.
HKSS-Completeness of modal algebras, pp. 923-930.
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Sharankhaev I. K.
On read-once multifunctions in some base, pp. 1098-1104. [Russian, English abstract]
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Antipova I. A., Kleshkova E. A.
On facets of the Newton polytope for the discriminant of the polynomial system, pp. 1180-1188.
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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]
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Isaev I. M.
On the join of Cross varieties of algebras, pp. 1299-1306. [Russian, English abstract]
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Skurikhin E. E., Stepanova A. A., Sukhonos A. G.
Extensions of the category S-Act, pp. 1332-1357.
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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]
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Blali A., El Amrani A., Hassani R. A., Razouki A.
On the uniqueness of I-limits of sequences, pp. 744-757.
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Bolotov D. V.
On PL embeddings of a 2-sphere in the 4-dimensional Euclidean space, pp. 867-883.
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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]
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Abrosimov N. V., Vuong B.
The volume of a spherical antiprism with S2n symmetry, pp. 1165-1179.
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Korablev Ph. G.
Quandles, quasoids and projections, pp. 1261-1277. [Russian, English abstract]
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Efremenko Yu. D.
On semi-implicit numerical method for surface diffusion equation for triangulated surfaces, pp. 1367-1389.
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Nezhinskij V. M.
Spatial graphs and their isotopy classification, pp. 1390-1396.
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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]
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Sayinath Udupa, Bhat R. S.
Vertex-vertex color energy of a graph, pp. 1027-1034.
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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.
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Goryainov S. V., Panasenko D. I., Shalaginov L. V.
Enumeration of strictly Deza graphs with at most 21 vertices, pp. 1423-1432.
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Computational mathematics

Lomov A. A.
Operator-orthoregressive methods for identifying coefficients of linear difference equations, pp. 792-804.
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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.
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Belykh V. N.
On the question of good conditionality of unsaturated quadrature formulas, pp. 1083-1097. [Russian, English abstract]
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Tarasyuk I. V.
Performance evaluation in stochastic process algebra dtsdPBC, pp. 1105-1145.
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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.
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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.
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Probability theory and mathematical statistics

Zhou Q. Q., Logachov A. V.
Moderate deviations principle for independent random variables under sublinear expectations, pp. 817-826.
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Chebunin M.
On the accuracy of the poissonisation in the infinite occupancy scheme, pp. 1035-1045.
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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

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.
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Bondar L. N., Nurmakhmatov V. S.
On solvability of the boundary value problem for one pseudohyperbolic equation, pp. 1046-1057.
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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]
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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

Real, complex and functional analysis

Romanov A. S.
Properties of extremal functions for p-capacity in R2, pp. 845-866. [Russian, English abstract]
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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]
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Sgibnev M. S.
On the uniqueness of the solution to the Wiener–Hopf 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.
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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.
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Akopyan R. R.
Best approximation of differentiation operators on the Sobolev class of functions analytic in a strip, pp. 1286-1298. [Russian, English abstract]
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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]
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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.
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Pleshcheva E. A.
Periodic interpolating-orthogonal bases of MRA and wavelets, pp. 1467-1474. [Russian, English abstract]
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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. А4-А29.
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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. А30-А43.
PDF DOI 10.33048/semi.2021.18.065

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