Contents

Russian Journal of Mathematical Physics

Vol. 33, No. 2, 2026

Research Articles

Points of Monotone Connectedness and Solar Properties of Sets

A.R. Alimov and N.A. Ilyasov p. 195  abstract

Decomposition of the Wiener Measure with Respect to the Orbits of the Action of the Diffeomorphism Group

V.V. Belokurov, E.T. Shavgulidze, and N.E. Shavgulidze p. 202  abstract

Billiard with Coulomb Potential Inside an Elliptic Ring

G.V. Belozerov and S.A. Galkin p. 225  abstract

Nonself-adjoint Three-Dimensional Operators with Point Interactions Supported by Curves

D.I. Borisov p. 241  abstract

Phase-Field System as a Regularization of the Free-Boundary Problem for an Incompressible Immiscible Two-Component Flow

N.A. Burov and R.K. Gaydukov p. 263  abstract

Homogenization of Attractors to the Chafee–Infante Equations in a Perforated Domain with Locally Periodic Obstacles: Subcritical and Supercritical Cases

G.A. Chechkin, A.T. Karipova, and A.M. Toleubay p. 276  abstract

Asymptotics for a Class of Singular Integrals of Quotients with Highly Degenerate Denominators

A.A. Elokhin p. 288  abstract

Properties of an Operator Describing Acoustic Black Holes

N.V. Ivanov and A.I. Shafarevich p. 302  abstract

Relaxation Oscillations in a System with Compactly Supported Nonlinearity Containing a Delay

A.A. Kashchenko p. 317  abstract

Degenerate r-Bell Numbers and Coherent States

T. Kim and D. S. Kim p. 332  abstract

Scattering for Anisotropic Potentials

E. Korotyaev p. 340  abstract

Canonical Form of the Inertia Tensor for Rigid Bodies on the Lobachevskii Plane and in a Pseudo-Euclidean Space

E.A. Kudryavtseva and A.Yu. Shubert p. 357  abstract

Three Identical One-Dimensional Quantum Particles with Point Interaction as a Solvable Model: III. Positive Essential Spectrum

M.A. Lyalinov p. 392  abstract

On the Homogenization of a Parabolic Equation with a Nonlocal Convolution Type Operator

A. Piatnitski, V. Sloushch, T. Suslina, and E. Zhizhina p. 407  abstract

Exploring Algebraic and Probabilistic Properties for Degenerate Bivariate Appell Polynomials

M. Riyasat and S. Khan p. 417  abstract

Norm Continuous Representations of Locally Compact Groups in a Hilbert Space

A.I. Shtern p. 431  abstract

Monotone Path-Connected Boundedly Weakly Compact Set is a Sun

I.G. Tsar’kov p. 434  abstract

Atiyah–Bott–Lefschetz Formula on Manifolds with Periodic Ends

V.E. Nazaikinskii and A.Yu. Savin p. 440  abstract