1. On the Correspondence between the Variational Principles in the Eulerian and Lagrangian Descriptions

   • A. V. Aksenov
   • K. P. Druzhkov

   Research Articles 06 December 2021 Pages: 411 - 415

2. Bifurcations of Essential Spectra Generated by a Small Non-Hermitian Hole. I. Meromorphic Continuations

   • D. I. Borisov
   • D. A. Zezyulin

   Research Articles 06 December 2021 Pages: 416 - 433

   

3. Asymptotics of the Number of Endpoints of a Random Walk on a Certain Class of Directed Metric Graphs

   • V. L. Chernyshev
   • A. A. Tolchennikov

   Research Articles 06 December 2021 Pages: 434 - 438

   

4. Asymptotics of Multiple Orthogonal Hermite Polynomials \(H_{n_1,n_2}(z,\alpha)\) Determined by a Third-Order Differential Equation

   • S. Yu. Dobrokhotov
   • A. V. Tsvetkova

   Research Articles 06 December 2021 Pages: 439 - 454

   

5. Pólya–Carlson Dichotomy for Dynamical Zeta Functions and a Twisted Burnside–Frobenius Theorem

   • A. Fel’shtyn
   • E. Troitsky

   Research Articles 06 December 2021 Pages: 455 - 463

6. The Regularized Free Fall I. Index Computations

   • U. Frauenfelder
   • J. Weber

   Research Articles 06 December 2021 Pages: 464 - 487

   

7. Spectral Analysis for Some Multifractional Gaussian Processes

   • A. I. Karol
   • A. I. Nazarov

   Research Articles 06 December 2021 Pages: 488 - 500

8. Local Dynamics of Two-Component Parabolic Systems of Schröedinger Type

   • S. A. Kashchenko

   Research Articles 06 December 2021 Pages: 501 - 513

9. Complete Integrability of a New Class of Hamiltonian Hydrodynamic Type Systems

   • Z. V. Makridin
   • M. V. Pavlov

   Research Articles 06 December 2021 Pages: 514 - 523

10. Two-Dimensional Dirac Operators with Interactions on Unbounded Smooth Curves

    • V. Rabinovich

    Research Articles 06 December 2021 Pages: 524 - 542

11. Continuity Criteria for Locally Bounded Automorphisms of Central Extensions of Perfect Lie Groups

    • A. I. Shtern

    Research Articles 06 December 2021 Pages: 543 - 544

12. Analytic Solutions of the Cylindrical Heat Equation with a Heat Source

    • H. M. Srivastava
    • K.-Y. Kung
    • S.-D. Lin

    Research Articles 06 December 2021 Pages: 545 - 552