1. Abnormal Extremals of Left-Invariant Sub-Finsler Quasimetrics on Four-Dimensional Lie Groups

   • V. N. Berestovskii
   • I. A. Zubareva

   OriginalPaper 27 May 2021 Pages: 383 - 399

2. A Tight Description of 3-Polytopes by Their Major 3-Paths

   • O. V. Borodin
   • A. O. Ivanova

   OriginalPaper 27 May 2021 Pages: 400 - 408

   

3. Cyclotomic Quotients of Two Conjugates of an Algebraic Number

   • A. Dubickas

   OriginalPaper 27 May 2021 Pages: 409 - 412

4. Automorphisms of the Gersten Group

   • F. A. Dudkin
   • E. A. Shaporina

   OriginalPaper 27 May 2021 Pages: 413 - 422

5. The Riemann Boundary Value Problem on Circular Spirals

   • B. A. Kats
   • D. B. Katz
   • Zhixin Lyu

   OriginalPaper 27 May 2021 Pages: 423 - 433

6. Second Kind Representations of Sobolev Space Solutions to a First Order General Elliptic Linear System in a Simply Connected Plane Domain

   • S. B. Klimentov

   OriginalPaper 27 May 2021 Pages: 434 - 448

7. The Universality of Some Compositions on Short Intervals

   • A. Laurinčikas

   OriginalPaper 27 May 2021 Pages: 449 - 454

8. Inequalities in a Two-Sided Boundary Crossing Problem for Stochastic Processes

   • V. I. Lotov
   • V. R. Khodjibayev

   OriginalPaper 27 May 2021 Pages: 455 - 461

9. Locally Finite Periodic Groups Saturated with Finite Simple Orthogonal Groups of Odd Dimension

   • D. V. Lytkina
   • V. D. Mazurov

   OriginalPaper 27 May 2021 Pages: 462 - 467

10. Estimates for Solutions to a Class of Nonautonomous Systems of Neutral Type with Unbounded Delay

    • I. I. Matveeva

    OriginalPaper 27 May 2021 Pages: 468 - 481

11. On Stable Extremals of the Potential Energy Functional

    • N. M. Poluboyarova

    OriginalPaper 27 May 2021 Pages: 482 - 488

12. Boundary Value and Inverse Problems for Some Classes of Nonclassical Operator-Differential Equations

    • S. G. Pyatkov

    OriginalPaper 27 May 2021 Pages: 489 - 502

13. Branching Time Logics with Multiagent Temporal Accessibility Relations

    • V. V. Rybakov

    OriginalPaper 27 May 2021 Pages: 503 - 510

14. On Split Malcev Poisson Algebras

    • J. M. Sánchez

    OriginalPaper 27 May 2021 Pages: 511 - 520

15. The Primitive Normality of a Class of Weakly Injective S-Acts

    • A. A. Stepanova
    • E. L. Efremov

    OriginalPaper 27 May 2021 Pages: 521 - 536

16. Retracts and Verbally Closed Subgroups with Respect to Relatively Free Soluble Groups

    • E. I. Timoshenko

    OriginalPaper 27 May 2021 Pages: 537 - 544

17. A Multivalued History-Dependent Operator and Implicit Evolution Inclusions. I

    • A. A. Tolstonogov

    OriginalPaper 27 May 2021 Pages: 545 - 553

18. A Generalization of Quotient Divisible Groups to the Infinite Rank Case

    • A. V. Tsarev

    OriginalPaper 27 May 2021 Pages: 554 - 559

19. Radon Transform on Sobolev Spaces

    • V. A. Sharafutdinov

    OriginalPaper 27 May 2021 Pages: 560 - 580