1. Approximations of Nonlinear Integral Functionals of Entropy Type

   • V. I. Bogachev

   Research Articles 04 December 2020 Pages: 1 - 11

2. Local Adiabatic Invariants Near a Homoclinic Set of a Slow–Fast Hamiltonian System

   • Sergey V. Bolotin

   Research Articles 04 December 2020 Pages: 12 - 24

   

3. On the Stability of a System of Two Identical Point Vortices and a Cylinder

   • A. V. Borisov
   • L. G. Kurakin

   Research Articles 04 December 2020 Pages: 25 - 31

   

4. On an Unsteady Boundary Layer of a Viscous Rheologically Complex Fluid

   • R. R. Bulatova
   • V. N. Samokhin
   • G. A. Chechkin

   Research Articles 04 December 2020 Pages: 32 - 69

   

5. On Integrability of Dynamical Systems

   • I. V. Volovich

   Research Articles 04 December 2020 Pages: 70 - 77

6. Various Equivalence Relations in Global Bifurcation Theory

   • N. B. Goncharuk
   • Yu. S. Ilyashenko

   Research Articles 04 December 2020 Pages: 78 - 97

   

7. Quantum Anomalies via Differential Properties of Lebesgue–Feynman Generalized Measures

   • John E. Gough
   • Tudor S. Ratiu
   • Oleg G. Smolyanov

   Research Articles 04 December 2020 Pages: 98 - 107

8. On Realization of Topological Conjugacy Classes of Morse–Smale Cascades on the Sphere \(S^n\)

   • V. Z. Grines
   • E. Ya. Gurevich
   • V. S. Medvedev

   Research Articles 04 December 2020 Pages: 108 - 123

   

9. Existence of Optimal Stationary States of Exploited Populations with Diffusion

   • A. A. Davydov

   Research Articles 04 December 2020 Pages: 124 - 130

10. On Momentum-Polynomial Integrals of a Reversible Hamiltonian System of a Certain Form

    • N. V. Denisova

    Research Articles 04 December 2020 Pages: 131 - 136

11. Division of \(n\)-Dimensional Euclidean Space into Circumscribed \(n\)-Cuboids

    • Vladimir Dragović
    • Roger Fidèle Ranomenjanahary

    Research Articles 04 December 2020 Pages: 137 - 147

    

12. Asymptotic Estimates for Singular Integrals of Fractions Whose Denominators Contain Products of Block Quadratic Forms

    • A. V. Dymov

    Research Articles 04 December 2020 Pages: 148 - 162

13. Discrete Geodesic Flows on Stiefel Manifolds

    • Božidar Jovanović
    • Yuri N. Fedorov

    Research Articles 04 December 2020 Pages: 163 - 174

14. Simple One-Dimensional Waves in an Incompressible Anisotropic Elastoplastic Medium with Hardening

    • A. G. Kulikovskii
    • A. P. Chugainova

    Research Articles 04 December 2020 Pages: 175 - 184

    

15. Investigation of Rotating Detonation Waves in an Annular Gap

    • V. A. Levin
    • I. S. Manuylovich
    • V. V. Markov

    Research Articles 04 December 2020 Pages: 185 - 201

    

16. Discretization of Commuting Ordinary Differential Operators of Rank 2 in the Case of Elliptic Spectral Curves

    • Gulnara S. Mauleshova
    • Andrey E. Mironov

    Research Articles 04 December 2020 Pages: 202 - 213

17. Hamiltonian in Guiding Center Theory: A Symplectic Structure Approach

    • A. I. Neishtadt
    • A. V. Artemyev

    Research Articles 04 December 2020 Pages: 214 - 219

18. Dynamics of a Crankshaft Mechanism under the Pressure of a Viscous Gas

    • P. I. Plotnikov
    • J. Sokołowski

    Research Articles 04 December 2020 Pages: 220 - 249

19. Some Results on the Existence of Forced Oscillations in Mechanical Systems

    • Ivan Yu. Polekhin

    Research Articles 04 December 2020 Pages: 250 - 261

    

20. \(\mu\)-Norm of an Operator

    • D. V. Treschev

    Research Articles 04 December 2020 Pages: 262 - 290

21. Dynamics of Perturbations under Diffusion in a Porous Medium

    • V. A. Shargatov
    • A. T. Il’ichev

    Research Articles 04 December 2020 Pages: 291 - 303

    

22. Semiclassical Asymptotics of the Solution to the Cauchy Problem for the Schrödinger Equation with a Delta Potential Localized on a Codimension 1 Surface

    • A. I. Shafarevich
    • O. A. Shchegortsova

    Research Articles 04 December 2020 Pages: 304 - 313