Volume 41, Issue 9

Search all Lobachevskii Journal of Mathematics articles

September 2020

Special issue Part 1 Algebra and Mathematical Logic: Theory and Applications-2. Editor: M.M. Arslanov, Special issue Part 2 Modern Methods of Mathematical Physycs. Editors: N.A. Sidorov, T.K. Yuldashev, and M.G. Yumagulov

35 articles in this issue

Identities on Two-Dimensional Algebras
H. Ahmed
U. Bekbaev
I. Rakhimov
OriginalPaper 07 November 2020 Pages: 1615 - 1629
Strong Degrees of Categoricity and Weak Density
N. A. Bazhenov
I. Sh. Kalimullin
M. M. Yamaleev
OriginalPaper 07 November 2020 Pages: 1630 - 1639
Direct Decompositions of Torsion-Free Abelian Groups
E. Blagoveshchenskaya
OriginalPaper 07 November 2020 Pages: 1640 - 1646
On ‘‘Simple’’ Undecidable Fragments of the Positive Theory of a Free Semigroup
V. G. Durnev
O. V. Zetkina
A. I. Zetkina
OriginalPaper 07 November 2020 Pages: 1647 - 1652
Stuctures of Ternary Semigroup of Mappings
S. Kar
I. Dutta
K. P. Shum
OriginalPaper 07 November 2020 Pages: 1653 - 1659
On Theory of Regular Languages with the Kleene Star Operation
B. Karlov
OriginalPaper 07 November 2020 Pages: 1660 - 1665
Finite Non-Nilpotent Rings with Complete Compressed Zero-Divisor Graphs
A. S. Monastyreva
OriginalPaper 07 November 2020 Pages: 1666 - 1671
Partial Fixed Point for Finite Models in Second Order Logic
V. S. Sekorin
OriginalPaper 07 November 2020 Pages: 1672 - 1679
The Axiomatic Rank of the Levi Class Generated by the Almost Abelian Quasivariety of Nilpotent Groups
S. A. Shakhova
OriginalPaper 07 November 2020 Pages: 1680 - 1683
Isomorphisms of Semirings of Continuous Nonnegative Functions and the Lattices of Their Subalgebras
V. V. Sidorov
OriginalPaper 07 November 2020 Pages: 1684 - 1692
Endomorphism Semigroups of Some Class of Connected Unars with Stagnant Element
S. V. Syrovatskaya
OriginalPaper 07 November 2020 Pages: 1693 - 1703
On the Residual Properties of Generalized Direct Products of Groups
E. A. Tumanova
OriginalPaper 07 November 2020 Pages: 1704 - 1711
Definability of Local Abelian Groups by Their Splitting Rings
S. V. Vershina
OriginalPaper 07 November 2020 Pages: 1712 - 1717
On Fairly Low and Superlow Sets
I. I. Vlasov
OriginalPaper 07 November 2020 Pages: 1718 - 1725
\(\boldsymbol{\mathcal{ALCQPI}}_{\boldsymbol{R}^{\mathbf{+}}}\): Rational Grading in an Expressive Description Logic with Inverse and Transitive Roles and Counting
M. Yanchev
OriginalPaper 07 November 2020 Pages: 1726 - 1746
The Least Dimonoid Congruences on Free \(\boldsymbol{n}\)-Nilpotent Trioids
A. V. Zhuchok
OriginalPaper 07 November 2020 Pages: 1747 - 1753
On Unique Solvability of a Boundary-Value Problem for a Viscous Transonic Equation
Yu. P. Apakov
OriginalPaper 07 November 2020 Pages: 1754 - 1761
Solution of Cauchy Problem for the Generalized Gellerstedt Equation
A. S. Berdyshev
A. Hasanov
Zh. A. Abdiramanov
OriginalPaper 07 November 2020 Pages: 1762 - 1771
Solvability of Pseudoparabolic Equations with Non-Linear Boundary Condition
A. S. Berdyshev
S. E. Aitzhanov
G. O. Zhumagul
OriginalPaper 07 November 2020 Pages: 1772 - 1783
On the Riesz Basisness of Root Functions of a Sturm–Liouville Operator with Conjugate Conditions
O. Cabri
K. R. Mamedov
OriginalPaper 07 November 2020 Pages: 1784 - 1790
A Modification of the Parameterization Method for a Linear Boundary Value Problem for a Fredholm Integro-Differential Equation
D. S. Dzhumabaev
K. Zh. Nazarova
R. E. Uteshova
OriginalPaper 07 November 2020 Pages: 1791 - 1800
On a Boundary-value Problem for a Parabolic-Hyperbolic Equation with Fractional Order Caputo Operator in Rectangular Domain
B. I. Islomov
U. Sh. Ubaydullayev
OriginalPaper 07 November 2020 Pages: 1801 - 1810
Three-dimensional Problems for a Parabolic-Hyperbolic Equation with Two Planes of Change of Type
B. I. Islomov
G. B. Umarova
OriginalPaper 07 November 2020 Pages: 1811 - 1822
Regularization of Systems of Volterra Linear Integral Equations of the Third Kind
T. T. Karakeev
OriginalPaper 07 November 2020 Pages: 1823 - 1828
Frankl-Type Problem for a Mixed Type Equation with the Caputo Fractional Derivative
E. T. Karimov
OriginalPaper 07 November 2020 Pages: 1829 - 1836
Unique Solvability of Problems for a Mixed Parabolic Equation in Unbounded Domain
A. O. Mamanazarov
OriginalPaper 07 November 2020 Pages: 1837 - 1845
Solving Problems of Vibrational Processes of Isotropically Homogeneous Elastic Plates
N. K. Medeubaev
A. Zh. Seytmuratov
M. I. Ramazanov
OriginalPaper 07 November 2020 Pages: 1846 - 1853
Representation of All Maximally Dissipative Multipoint Differential Operators for First Order
R. Öztürk Mert
OriginalPaper 07 November 2020 Pages: 1854 - 1863
On One Solution of a Periodic Boundary-Value Problem for a Third-Order Pseudoparabolic Equation
N. T. Orumbayeva
A. B. Keldibekova
OriginalPaper 07 November 2020 Pages: 1864 - 1872
On a Problem of Heat Equation with Fractional Load
M. I. Ramazanov
M. T. Kosmakova
L. Zh. Kasymova
OriginalPaper 07 November 2020 Pages: 1873 - 1885
Nonlocal Boundary-Value Problem for a Parabolic-Hyperbolic Equation of the Second Kind
A. K. Urinov
A. B. Okboev
OriginalPaper 07 November 2020 Pages: 1886 - 1897
The Dirichlet Problem for an Elliptic Equation with Singular Coefficients in a Semi-Cylindrical Domain
A. K. Urinov
K. T. Karimov
OriginalPaper 07 November 2020 Pages: 1898 - 1909
Mellin Transform and Integro-Differential Equations with Logarithmic Singularity in the Kernel
T. K. Yuldashev
S. K. Zarifzoda
OriginalPaper 07 November 2020 Pages: 1910 - 1917
Lyapunov Quantities in the Problem about Local Bifurcations of Non-Autonomous Periodic Dynamical Systems
M. G. Yumagulov
S. V. Akmanova
N. A. Kopylova
OriginalPaper 07 November 2020 Pages: 1918 - 1923
Approximate Research of Problems on Perturbation of Periodic and Autonomous Hamiltonian Systems in Critical Cases
M. G. Yumagulov
L. S. Ibragimova
A. S. Belova
OriginalPaper 07 November 2020 Pages: 1924 - 1931

Volume 41, Issue 9

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