Vol. 46, No. 12, 2025

Lobachevskii Journal of Mathematics

Weihrauch Degrees of Elementary Embeddings for Prime and Saturated Models

N. A. Bazhenov, M. Fiori-Carones, and M. I. Marchuk p. 6079 abstract

On Undecidability Degree of Theory of Figures in Countable and Uncountable Linear Spaces

S. M. Dudakov p. 6092 abstract

Relatively Elementary Definability of the Class of Universal Partial Graphic Semiautomata over Nontrivial Reflexive Graphs in the Class of Semigroups

R. A. Farakhutdinov and V. A. Molchanov p. 6103 abstract

Polynomial Completeness and Strong Non-affinity of Almost All \(\boldsymbol{n}\)-Quasigroups

A. V. Galatenko, V. V. Galatenko, and A. E. Pankratiev p. 6116 abstract

A Duality for the Variety \(\boldsymbol{{S}{P}(M_{3})}\)

A. E. Izyurova and M. V. Schwidefsky p. 6125 abstract

On Monomorphisms of Universal Hypergraphic Automata

E. V. Khvorostukhina p. 6143 abstract

Strong Vertexes in the Compressed Zero-Divisor Graph of a Finite Ring

A. S. Monastyreva p. 6150 abstract

On Multiplicatively Idempotent Semirings with Additional Conditions

E. M. Vechtomov p. 6155 abstract

Methods and Contemporary Tools for Multi-criteria Testing and Dynamic Service Quality Measurements with an Emphasis on Research Networks

A. G. Abramov p. 6161 abstract

A Semi-Markov Random Walk Process and Its Connection with Fractional Order Differential Equation

R. A. Bandaliyev, K. K. Omarova, and E. A. Ibayev p. 6175 abstract

Entire Solutions for the Systems of Second-Order Partial Differential-Difference Fermat-Type Equations in Several Complex Variables

Tania Biswas and Sayantan Maity p. 6184 abstract

Effect of Piston Size on Resonant Gas Oscillations in a Closed Tube with a Sudden Change in Cross-sectional Area

S. A. Fadeev and L. R. Shaidullin p. 6200 abstract

Bigraphs and Dynamics of Lotka–Volterra Mapping Trajectories on a Four-Dimensional Simplex \(\boldsymbol{\Delta^{4}}\)

R. N. Ganikhodzhaev, D. B. Eshmamatova, U. R. Muminov, and A. N. Temirbekov p. 6207 abstract

Partial Differential Equations Solved by Mittag-Leffler-type and Le Roy-type Functions

Filippo Giraldi, Francesco Mainardi, and Sergei Rogosin p. 6220 abstract

Methodology for Solving the Problem of Determining the Limiting Load of Flat Composite Rods with Different Fiber Placement

R. A. Kayumov, I. Z. Mukhamedova, and A. M. Shakirova p. 6228 abstract

Solvability of Quasilinear and Nonlinear Integral Equations with a Sum-Difference Kernel on the Half-Line

Aghavard Kh. Khachatryan, Khachatur A. Khachatryan, and Haykanush S. Petrosyan p. 6238 abstract

On the Boundedness of Imaginary Powers of an Elliptic Operator in Banach Space with Potential Singular on Manifolds

A. R. Khalmukhamedov and T. N. Alikulov p. 6251 abstract

Solving Coupled Problems of Blood Flow and Coagulation in Moving Domains, II: Algebraic Solvers and Their Parallel Performance

I. Konshin, K. Terekhov, and Yu. Vassilevski p. 6262 abstract

Representation of Continuous Solutions of the Beltrami Equation as a Series

U. R. Kusherbayeva p. 6274 abstract

A Note on an Efficient Approach for Solving Quasi-Birth-and-Death Processes Exhibiting Special Structures

Hsing Paul Luh p. 6285 abstract

Solution of the Generalized Eshelby Problem for a Spherical Multilayer Inclusion with Elastic and Viscoelastic Layers in the Framework of Gradient Elasticity

S. A. Lurie and D. B. Volkov-Bogorodskiy p. 6303 abstract

Applications of \(\boldsymbol{\beta}\)-Distributions for Quantitative Description of Micro-fluctuations Accompanying of Different Trend-less Sequences

R. R. Nigmatullin, A. A. Litvinov, and S. I. Osokin p. 6321 abstract

Analysis of a New Sheffer Polynomial Family with Properties and Applications

M. A. Pathan and T. Usman p. 6330 abstract

On Convergence of Different Bootstrap Approximations for Medians

I. E. Pile p. 6341 abstract

On the Classification of Sets of Partial Differential Equations of the First Order

I. E. Pleshchinskaya p. 6347 abstract

Algebraic Variant of Noether Operator Theory

N. B. Pleshchinskii p. 6358 abstract

Essential and Point Spectrum of a Model Hamiltonian Associated with the Three-particle Quantum Systems on a Lattice

Tulkin Rasulov and Bekzod Bahronov p. 6375 abstract

Estimation of Surface Remesh Methods in the Ice Accretion Problem

A. A. Rybakov p. 6386 abstract

The Fujita Exponent for a Heat Equation with Mixed Local and Nonlocal Nonlinearities on the Heisenberg Group

Z. Sabbagh, A. Z. Fino, and M. Kirane p. 6397 abstract

Monotonicity in the Parameter of the Mittag-Leffler Function and Determining the Fractional Exponent of the Subdiffusion Equation

I. A. Sulaymonov and R. R. Ashurov p. 6411 abstract

Some Modified Estimators of the Population Mean Using the Robust Measures in Single and Two-Phase Sampling

Uzma Tariq, Nadia Saeed, Saman Hanif Shahbaz, and Muhammad Qaiser Shahbaz p. 6425 abstract

Analysis of Semi-periodic Problem for Integro-differential Equations of Parabolic Type

S. M. Temesheva, Zh. M. Kadirbayeva, and S. K. Kuanysh p. 6441 abstract

Solvability of Nonlinear Equilibrium Problems for Elastic Thin Shells of Timoshenko-type

S. N. Timergaliev p. 6455 abstract

Simplicial Clustering Using the \(\boldsymbol{\alpha}\)-Transformation

Michail Tsagris, Christos Adam, and Nikolaos Kontemeniotis p. 6471 abstract

Operator Approach to the Problem of Small Oscillations of a Pendulum with a Cavity Partially Filled with a Heavy Viscous Fluid

D. O. Tsvetkov and V. I. Voytitsky p. 6483 abstract

Samarskii–Ionkin Type Two-Point Boundary Value Problem for a Nonhomogeneous Pseudoparabolic Equation

T. K. Yuldashev, B. J. Kadirkulov, and D. E. Uzaqbaeva p. 6501 abstract

A Problem for Multiple Nano-Sized Interface Inclusions between Two Elastic Semi-Planes

Anna Y. Zemlyanova p. 6514 abstract

Contents

Lobachevskii Journal of Mathematics