Volume 18 (2021), N 1

Differential equations, dynamical systems and optimal control

Chouader R., Benyoucef S., Bendjeddou A.
Kolmogorov differential systems with algebraic limit cycles, pp. 1-8.
PDF DOI 10.33048/semi.2021.18.001

Kozhanov A. I.
Initial-boundary value problems for degenerate hyperbolic equations, pp. 43-53. [Russian, English abstract]
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Islomov B. I., Alikulov E. K.
Analogues of the Cauchy-Goursat problem for a loaded third-order hyperbolic type equation in an infinite three-dimensional domain, pp. 72-85.
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Belonogov V. A., Pyatkov S. G.
On the regular solvability of some classes of transmission problems in a cylindrical space domain, pp. 176-206.
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Titova A. A.
On the shape of the free-surface problem of an ideal incompressible fluid flow with a singular sink at the top of a triangular ledge at the bottom, pp. 207-236. [Russian, English abstract]
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Kasri A.
A frictional contact problem with damage in viscoplasticity, pp. 255-281.
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Sazhenkov S. A., Fankina I. V., Furtsev A. I., Gilev P. V., Gorynin A. G., Gorynina O. G., Karnaev V. M., Leonova E. I.
Multiscale analysis of a model problem of a thermoelastic body with thin inclusions, pp. 282-318.
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Besova M. I., Kachalov V. I.
On a nonlinear differential equation in a Banach space, pp. 332-337. [Russian, English abstract]
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Golubyatnikov V. P., Minushkina L. S.
On uniqueness and stability of a cycle in one gene network, pp. 464-473.
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Bazzaev A. K., Gutnova D. K.
About convergence of difference schemes for a third-order pseudo-parabolic equation with nonlocal boundary value condition, pp. 548-560.
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Pertsev N. V.
Construction of exponentially decreasing estimates of solutions to a Cauchy problem for some nonlinear systems of delay differential equations, pp. 579-598.
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Kozhanov A. I., Shadrina N. N.
Boundary value problems with conjugation conditions for quasi-parabolic equations of the third order with a discontinuous sign-variable coefficient, pp. 599-616.
PDF DOI 10.33048/semi.2021.18.043

Probability theory and mathematical statistics

Sakhanenko A. I., Wachtel V. I., Prokopenko E. I., Shelepova A. D.
On the asymptotics of the distribution of the exit time beyond a non-increasing boundary for a compound renewal process, pp. 9-26. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.002

Discrete mathematics and mathematical cybernetics

Makhnev A. A., Belousov I. N., Paduchikh D. V.
Inverse problems of graph theory: graphs without triangles, pp. 27-42. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.003

Fedoryaeva T. I.
On radius and typical properties of n-vertex graphs of given diameter, pp. 345-357.
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Batueva Ts. Ch-D., Borodin O. V., Ivanova A. O., Nikiforov D. V.
All tight descriptions of major 3-paths in 3-polytopes without 3-vertices, pp. 456-463.
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Fedoryaeva T. I.
Center and its spectrum of almost all n-vertex graphs of given diameter, pp. 511-529.
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Plaksina V. D., Shcherbina P. A.
New perfect colorings of infinite circulant graphs with continuous sets of distanses, pp. 530-533.
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Tokareva N.N., Shaporenko A.S., Solé P.
Connections between quaternary and Boolean bent functions, pp. 561-578.
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Mednykh A. D.
Fixed points of cyclic groups acting purely harmonically on a graph, pp. 617-621.
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Taranenko A. A.
On a metric property of perfect colorings, pp. 640-646.
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Mathematical logic, algebra and number theory

Zenkov A. V., Isaeva O. V.
On variety N of normal valued m-groups, pp. 54-60.
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Ivanova Z. K., Faizrahmanov M. Kh.
Weak reducibility of computable and generalized computable numberings, pp. 112-120.
PDF DOI 10.33048/semi.2021.18.035

Selivanov V. L.
Effective Wadge hierarchy in computable quasi-Polish spaces, pp. 121-135.
PDF DOI 10.33048/semi.2021.18.010

Altayeva A. B., Kulpeshov B. Sh.
On almost omega-categoricity of weakly o-minimal theories, pp. 247-254.
PDF DOI 10.33048/semi.2021.18.018

Korobov A. A., Korobov O. A.
On the discriminant of a quadratic field with intermediate fractions of negative norm and the decomposability of its representing polynomial, pp. 319-331. [Russian, English abstract]
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Kogabaev N. T.
On closure of configurations in freely generated projective planes, pp. 358-368.
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Kornev R.
Computable metrics above the standard real metric, pp. 377-392.
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Yeshkeyev A. R., Kassymetova M. T., Ulbrikht O. I.
Independence and simplicity in Jonsson theories with abstract geometry, pp. 433-455.
PDF DOI 10.33048/semi.2021.18.030

Shumakova E. O.
Groups of central units of rank 1 of integral group rings of Frobenius metacyclic groups, pp. 622-639.
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Computational mathematics

Kazantsev I. G., Mukhametzhanova B. O., Iskakov K. T.
Detection of the corner structures in 3D arrays using scalable masks, pp. 61-71.
PDF DOI 10.33048/semi.2021.18.006

Derevtsov E. Yu., Maltseva S. V.
Recovery of a vector field in the cylinder by its jointly known NMR-images and ray transforms, pp. 86-103.
PDF DOI 10.33048/semi.2021.18.008

Lee M. G., Zhang L. P., Li Z. C., Kazakov A. L.
Dual null field method for Dirichlet problems of Laplace's equation in circular domains with circular holes, pp. 393-422.
PDF DOI 10.33048/semi.2021.18.028

Imomnazarov B. Kh., Mikhailov A. A., Khaydarov I. Q., Kholmurodov A. E.
Numerical solution of the solute transfer problem in porous elastic clay shale, pp. 694-702. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.049

Popov A. S.
Cubature formulas on the sphere that are invariant under the transformations of the dihedral groups of rotations with inversion, pp. 703-709.
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Real, complex and functional analysis

Kopylov A. P.
Unique determination of conformal type for domains. III, pp. 104-111.
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Shlyk V. A.
Removable sets for Sobolev spaces with Muckenhoupt A1-weight, pp. 136-159.
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Aseev V. V.
Some remarks on Möbius structures, pp. 160-167.
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Shamoyan F. A., Bednazh V. A., Kustova V. A.
Blaschke product in Privalov classes, pp. 168-175.
PDF DOI 10.33048/semi.2021.18.014

Suragan D., Mustafa M.
A note on Hardy type inequalities for quaternion-valued functions, pp. 338-344.
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Dubinin V. N.
Some remarks on rotation theorems for complex polynomials, pp. 369-376.
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Tryamkin M. V.
A version of Schwarz's lemma for mappings with weighted bounded distortion, pp. 423-432.
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Abasov N. M.
On band preserving orthogonally additive operators, pp. 495-510.
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Azizov A. N., Chilin V. I.
Ergodic theorems in Banach ideals of compact operators, pp. 534-547.
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Cavalheiro A. C.
Existence results for a class of nonlinear degenerate Navier problems, pp. 647-667.
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Kopylov Ya. A
On the Orlicz cohomology of star-bounded simplicial complexes, pp. 710-719.
PDF DOI 10.33048/semi.2021.18.051

Geometry and Topology

Mozhey N. P.
Three-dimensional homogeneous spaces of nonsolvable Lie groups with equiaffine connections of nonzero curvature, pp. 237-246.
PDF DOI 10.33048/semi.2021.18.017

Yuldashev T. K., Mukhamadiev F. G.
Local τ-density and local weak τ-density in topological spaces, pp. 474-478.
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Poroshenko E. N., Timoshenko E. I.
Partially commutative groups and Lie algebras, pp. 668-693.
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Mathematical life

Kutateladze S. S.
A few words about probability and statistics (on the Occasion of the 90th birthday of Aleksandr Borovkov), pp. A1-A3.
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© Sobolev Institute of Mathematics, 2004