2020 - Bulletin of the Institute of Mathematics

Bulletin of the Institute of Mathematics
Founded in 2018
by
Uzbekistan Academy of Sciences
V.I.Romanovskiy Institute of Mathematics
and
Mathematical Society of Uzbekistan

Title
Go to content

2020

Archive
Papers published in 2020

1. Allen I. K., Duggal D., Nasir S., Karimov E. T. On a boundary value problem for a time-fractional wave equation with the Riemann-Liouville and Atangana-Baleanu derivatives (1-9)
2. Alimov Sh. A., Yuldasheva A. V. On Cauchy problem for Boussinesq-type equation (10-14)
3. Babajanov B. A., Ruzmetov M. M., Babajanov A. B.  On the integration of a Toda-type chain with an integral type source (15-26)
4. Muydinjanov D. R. Dirichlet problem for Helmholtz equation with the three singular coefficients (27-36)
5. Ruzimuradova D. H., Azamova N. A. The analytic 3D-system with the limit set consisting of four straight lines (37-40)
6. Abdushukurov F. A., Chuprunov A. N.  On the approximation of a Poisson random variable by a Gaussian random  variable (41-49)
7. Azamov S. S. Construction of a discrete analogue of a differential operator (50-58)
8. Kadirkulov B. J., Jalilov M. A. On a nonlocal problem for fourth-order mixed type equation with the Hilfer operator (59-67)
9. Mamadaliev U. X. Description of solvable Leibniz algebras with nilradical Nm;n (68-74)
10. Mamanazarov A. O. Tricomi problems for a parabolic-hyperbolic equation with singular coefficients (75-89)
11. Nurmuhamedova N. S. Local asymptotic normality of statistical experiments in the competing risks model under combined hybrid random censoring (90-94)
12. Oqboev A. B.  Tricomi problem for parabolic-hyperbolic type equation (95-103)
13. Akhmadjon Urinov (dedicated to 70th Anniversary) (104-106)
14. Fayziev A. A., Turgunov T. T. Statistical analysis and forecasting of cotton yield dynamics in the Republic of Uzbekistan (107-111)
15. Fayazova Z. K. Boundary value problem for heat exchange process with Neumann condition in bound of region with integral condition (112-117)
16. Fayazov K. S., Xajiev I. O. The boundary value problem for a second-order differential equation with one line of degeneracy (118-126)
17.Ergashev T.G., Safarbaeva N.M. Holmgren problem for multidimensional Helmholtz equation with one singular coefficient (127-135)


1. Babadjanova A. K. Integration of the matrix Ablowitz-Ladik lattice with a self-consistent source (1-10)
2. Prenov B. B. Some examples of systems of non-algebraic equations (11-18)
3. Rozikov U. A., Shoyimardonov S. K. A Model for COVID-19 Pandemic and Prediction for Uzbekistan (19-21)
4. Seytov Sh. J., Ganikhodzhayev R. N. The method of graphical analysis for some two dimensional dynamical systems (22-26)
5. Abdurasulov K. K. The isomorphism between algebras Inder ($W_n$ ) and  $W_{n-1}$ (27-33)
6. Boltayev A. K., Akhmedov  D. M. An extremal function of a quadrature formula (34-38)
7. Boltayev N. D.  Coefficients of the optimal quadrature formula for approximate calculation of Fourier integrals (39-46)
8. Islomov B. I., Ubaydullayev U. Sh. On a boundary value problem with boundary conditions of the second kind for an equation of parabolic - hyperbolic type with a fractional order operator in the sense of Caputo in a rectangular domain (47-57)
9. Ismoilov A. S. Uniqueness and existence of a solution to the problem of integral geometry in a strip (58-67)
10. Karimov K. T. Dirichlet type problem for a three-dimensional equation of mixed type with three singular coefficients in a semi-infinite parallelepiped (68-82)
11. Kakadjonava L. R. Uniform theorems of the Glivenko-Cantelli and Donsker type for a sequential integral process of independence (83-91)
12. Muxamedov A. K., Kobilov U. X.  Asymptotic normality of two sample Wilcoxson-Mann-Whitney statistics of strongly positive orthant dependent sequences (92-96)
13.  Safarov J. Sh. The problem of determining the kernel of an integro-differential equations with smooth data in a bounded domain (97-102)
14. Usmonov B. Z. The non-local problem for an equation with the third-order elliptic-hyperbolic operator (103-110)


1. Aralova K. A., Jamilov U. U.  On the dynamics of superposition of non-Volterra quadratic stochastic operators (1-14)
2. Durdiev D. K., Nuriddinov Zh. Z.  Kernel determining problem in the integro–differential heat equation with a variable thermal conductivity (15-26)
3. Eshkabilov Yu. Kh., Nodirov Sh. D. On the positive fixed points of quartic operators (27-36)
4. Imomkulov A. N. On absolute nilpotent elements of the evolution algebras corresponding to approximation of finite dimensional algebras (37-41)
5. Ishmetov A. Ya. On C-properties of the space of idempotent probability measures (42-48)
6. Mamatov M. Sh., Nuritdinov J. T. On some laws for calculating the Мinkovski difference and sum (49-59)
7. Mustapokulov Kh. Y. On a certain invariance problem for a constant multivalued mapping in a heat conduction problem with impulse control (60-67)
8. Rahmonov E. S., Beshimov G. R. Complete system of invariants of m-points in the two-dimensional bilinear-metric space with the form $x_1y_1-2x_2y_2$ over the field of rational numbers (68-76)
9. Mohd Danish Siddiqi. Generalized Yamabe solitons on Trans Sasakian manifolds (77-85)
10. Sheraliyev Sh. N. On the solvability of the quasi-linear periodic problem of peridynamics (86-93)
11. Umrzaqov N. M. Local derivations of nilpotent algebras of upper triangular matrices (94-97)
12. Usmonov J. B., Kodirova M. A. A quadratic stochastic operator with variable coefficients (98-107)
13. Aripov M. M., Djabborov O. R. Estimation and asymptotics of solutions the parabolic type equation with double non-linearity and damping (108-118)
14. Kasimov Sh. G., Madrahimov U. S., Koshanov A. P. On unique solvability of multidimensional initial-boundary problem of beam oscillations, one end of which is patched, and the other floating in Sobolev spaces (119-136)
15. Irgashev B. Yu.  Construction of self-similar solutions for high-order equations having degeneracy of the first and second kind (137-143)
16. Ruziev M. X. On a boundary value problem for mixed type equation with singular coefficients (144-152)
17. Umarova G. B. Three-dimensional Tricomi problem for a parabolic-hyperbolic equation with two planes of change of type (153-166)
18. Hayotov A. R., Rasulov R. G. Extension of the Euler-Maclaurin quadrature formula in the space $W_2^(5,4)$ (167-176)
19. Xolboev A. G. The pursuit-evasion game on the 1-skeleton graph of Archimedean solids in the space $R^3$ (177-182)
20. Xurramov N. X. Generalization of the Tricomi Problem for one class of equations of mixed type (183-198)
21. Shaimkulov B. A., Bozorov J. T. Conditions for the holomorphic continuation into a unit polydisc of a function defined on the polydisc skeleton (199-203)

1. Babaev S. S., Davronov J. R., Mamatova N. H. On an optimal interpolation formula in the space $W_{2,\sigma}^{(1,0)}$ (1-12)
2. Iskanadjiev I. M. On Pontyagin’s lower operator in nonlinear differential games with fixed time   (13-20)
3.  Rasulov T. H., Bahronov B. I. Structure of the numerical range of a Friedrichs model:  1D case with rank two perturbation (21-27)
4.  Alikulov E. K. A boundary value problem for loaded parabolic-hyperbolic type equation of the third-order  (28-49)
5.  Azizov A. S. A mixed problem for a fourth order nonhomogeneous equation with singular coefficients in a rectangular (50-59)
6.  Fayazov K. S., Rahmatov H. Ch . Ill-posed boundary value problem for a fourth-order pseudodifferential equation  (60-66)
7.  Jurayev Sh. Yu. Some limit theorems from the theory of critical branching stochastic processes   (67-74)
8.  Karimov K. T. Boundary value problems for a three-dimensional elliptic equation with a singular coefficient in a cylindrical domain (75-97)
9.  Kasimov X. N., Javliyev S. K. Algorithmic representations of ordered unars  (98-104)
10. Okboev A. B. Cauchy-Goursat problem for a second kind degenerated equation of hyperbolic type  (105-112)
11. Khakimov R. M., Umirzakova K. O. The uniqueness conditions for periodic Gibbs measures for one HC-models with three states  (113-119)
12. Kholturaev X. F. Skeletons for compacta of the space of idempotent probability measures (120-127)
13. Khurramov N. X. Problem with the Bitsadze–Samarskiy condition on parallel  characteristics of one family and general conjugation
conditions on the line of degeneration for a single class of equations of mixed type (128-146)
14. Khusanov Dj. X., Berdiyorov F. Sh., Buranov J. I.  Comparative method in stability problems in terms of variable solutions of ordinary differential equations (147-155)
1. Bozarov B. I. Optimal quadrature formulas with the trigonometric weight in Sobolev  space (1-11)
2. Eshimbetov M. R.   Initial-boundary value problem for heat equation on ladder-type graph  (12-19)
3. Khudoyberdiyev A. Kh., Shermatova Z. Kh. Maximal torus of quasi-filiform Leibniz algebras (20-27)
4. Abdurasulov K. K., Solijanova G. O.  Maximal pro-solvable Lie algebras with maximal positively graded ideals of length  3/2    (28-32)
5. Dzhamalov S. Z., Ruziyev U. Sh., Abdullayev O. K.,  Turaqulov Kh. K. On a seminonlocal boundary value problem for a model loaded
mixed type equation of the second kind of the second order in a rectangle  (33-39)
6. Nuraliyev  F. A., Akhmedov D. M. On optimal interpolation formulas of Hermite type in  $L_2^(m)(0,1)$ space (40-47)
7. Rakhimova G. G. The asymptotic Properties of the empirical characteristic process with random sample size (48-52)
8. Khasanov T. G., Normuradov Kh. N. Algorithm for solving the Cauchy problem for the loaded Korteweg-de Vries equation with a free term (53-58)
9. Khusainova B. B.  Central Limit Theorem of momentless conditions I.  (59-64)
10. Sharipov  S. O., Toshqulov Kh. A. Central limit theorem for nearly critical branching processes with weakly dependent immigration  (65-71)
11. Sharipov O. Sh., Ruziyeva D. S. Central limit theorem for $c_0$ space-valued random fields  (72-76)
12. Rasul Ganikhodjayev (dedicated to 75th Anniversary)  (77-78)
  
1. Karimov U. Sh. On the local derivations on real W*-algebras (1-3)
2. Zunnunov A. O. About the task of prosecuting between a lion and a man in a closed arena (4-8)
3. Abdullayev J. Sh. Estimates of the Bergman kernel for homogeneous bounded domains (9-17)
4. Juraev R. M. Uniformity of space of the G-permutation degree (18-23)
5. Kushmurodov A. A. Strong law of large numbers for m− dependent random fields with values in Banach spaces (24-29)
6. Madrakhimov U. S. Cauchy problem for a fractional order equation with a pseudo-differential operator coefficient related to the oscillation equation of the plate (30-36)
7. Mamanazarov A. O. Boundary value problems for a fractional order mixed parabolic equation in unbounded domains (37-48)
8. Seidullayev A. K. On a regularization problem for the integral problem strip geometry on a family of broken lines (49-54)
9. Tugenov Z. T. Periodic real measures (55-58)
10. Kholturayev Kh. F. On a criterion of metrizability of compact and idempotent probability measures functor (59-64)
11. Khomidov M. K. Gibbs distributions for a discrete Toda chain (65-73)
12. Khusainova B. B. Central limit theorem of without moment conditions. II     (74-78)



"Bulletin of the Institute of Mathematics" electronic journal
(C) Erkinjon Karimov, 2019
Back to content