1. Upper Bounds for the Expected Maxima of Independent Random Variables Given Known First Four Moments

   • D. V. Ivanov

   Research Articles 25 October 2021 Pages: 311 - 321

   

2. Binary Leibniz Algebras

   • N. A. Ismailov
   • A. S. Dzhumadil’daev

   Research Articles 25 October 2021 Pages: 322 - 328

3. Mixed Problem for a General 1D Wave Equation with Characteristic Second Derivatives in a Nonstationary Boundary Mode

   • F. E. Lomovtsev
   • K. A. Spesivtseva

   Research Articles 25 October 2021 Pages: 329 - 338

4. Three Formations over \(\mathfrak U\)

   • V. S. Monakhov

   Research Articles 25 October 2021 Pages: 339 - 346

5. Refinement of Relations between Mixed Moduli of Smoothness in the Metrics of \(L_p\) and \(L_\infty\)

   • M. K. Potapov
   • B. V. Simonov

   Research Articles 25 October 2021 Pages: 347 - 362

6. Explicit Evaluation Formula for Ramanujan’s Singular Moduli and Ramanujan–Selberg Continued Fractions

   • D. J. Prabhakaran
   • K. Ranjithkumar

   Research Articles 25 October 2021 Pages: 363 - 374

7. On Shallit’s Minimization Problem

   • S. Yu. Sadov

   Research Articles 25 October 2021 Pages: 375 - 392

   

8. On the Recovery of Solutions of a Generalized Cauchy–Riemann System in a Multidimensional Spatial Domain from Their Values on a Piece of the Boundary of This Domain

   • É. N. Sattorov
   • F. É. Érmamatova

   Research Articles 25 October 2021 Pages: 393 - 408

9. Analogs of Schmidt’s Formula for Polyorthogonal Polynomials of the First Type

   • A. P. Starovoitov
   • N. V. Ryabchenko

   Research Articles 25 October 2021 Pages: 409 - 417

10. Approximation of Functions by Discrete Fourier Sums in Polynomials Orthogonal on a Nonuniform Grid with Jacobi Weight

    • M. S. Sultanakhmedov

    Research Articles 25 October 2021 Pages: 418 - 431

11. Inequalities between Best Polynomial Approximants and Smoothness Characteristics of Functions in \(L_2\)

    • M. Sh. Shabozov

    Research Articles 25 October 2021 Pages: 432 - 439

12. Freiman Cover Ideals of Unmixed Bipartite Graphs

    • Guangjun Zhu
    • Yakun Zhao
    • Yijun Cui

    Research Articles 25 October 2021 Pages: 440 - 448

    

13. On Sequential Properties of Spaces of Measures

    • V. I. Bogachev

    Short Communications 25 October 2021 Pages: 449 - 453

14. Note on Partitions with Even Parts below Odd Parts

    • S. Chern

    Short Communications 25 October 2021 Pages: 454 - 457

15. Exact Discretization of the \(L_2\)-Norm with Negative Weight

    • I. V. Limonova

    Short Communications 25 October 2021 Pages: 458 - 462

    

16. Invariant Schrödinger Operators with Point Interactions at the Vertices of a Regular Polyhedron

    • M. M. Malamud
    • V. V. Marchenko

    Short Communications 25 October 2021 Pages: 463 - 469

17. On Somos-4 and Somos-5 Sequences

    • A. V. Ustinov

    Short Communications 25 October 2021 Pages: 470 - 472

18. Approximation Properties of the Vallée-Poussin Means of Partial Sums of a Special Series in Laguerre Polynomials

    • R. M. Gadzhimirzaev
    • T. N. Shakh-Émirov

    Research Articles 25 October 2021 Pages: 475 - 488

19. Orthogonality Relations for the Primitives of Legendre Polynomials and Their Applications to Some Spectral Problems for Differential Operators

    • T. A. Garmanova
    • I. A. Sheipak

    Research Articles 25 October 2021 Pages: 489 - 496

20. Absolute Continuity of the Spectrum of a Periodic 3D Magnetic Schrödinger Operator with Singular Electric Potential

    • L. I. Danilov

    Research Articles 25 October 2021 Pages: 497 - 510

21. On a Ramanujan Identity and Its Generalizations

    • A. T. Daniyarkhodzhaev
    • M. A. Korolev

    Research Articles 25 October 2021 Pages: 511 - 521

22. New Classes of Contractions in Banach Algebras with Applications

    • M. R. Haddadi
    • V. Parvaneh
    • V. Rakočević

    Research Articles 25 October 2021 Pages: 522 - 531

23. On the Regular Behavior of Entire Functions of Zero Order along Curves of Regular Rotation

    • N. V. Zabolotskii
    • M. R. Mostova
    • V. E. Shvets

    Research Articles 25 October 2021 Pages: 532 - 542

24. Regularity of the Solution of the Prandtl Equation

    • V. E. Petrov
    • T. A. Suslina

    Research Articles 25 October 2021 Pages: 543 - 559

25. Solvability of Independent Systems of Equations in Finitely Generated Nilpotent Groups

    • V. A. Roman’kov

    Research Articles 25 October 2021 Pages: 560 - 564

26. Mixing Sets for Rigid Transformations

    • V. V. Ryzhikov

    Research Articles 25 October 2021 Pages: 565 - 570

27. Multipoint Padé Approximation of the Psi Function

    • V. N. Sorokin

    Research Articles 25 October 2021 Pages: 571 - 577

28. Two Examples Related to Properties of Discrete Measures

    • S. P. Suetin

    Research Articles 25 October 2021 Pages: 578 - 582

29. The Existence of Zeros of Multivalued Functionals, Coincidence Points, and Fixed Points in \(f\)-Quasimetric Spaces

    • T. N. Fomenko

    Research Articles 25 October 2021 Pages: 583 - 591

30. Feedback and Impulse Behavior of Differential-Algebraic Equations

    • A. A. Shcheglova

    Research Articles 25 October 2021 Pages: 592 - 608

31. Approximate Controllability from the Exterior for a Nonlocal Sobolev–Galpern Type Equation

    • S. Zamorano

    Research Articles 25 October 2021 Pages: 609 - 622

32. On the Positivity of Average Sums of Sine Series with Monotone Coefficients

    • E. D. Alferova
    • A. Yu. Popov

    Short Communications 25 October 2021 Pages: 623 - 627

33. On the Order of Magnitude of the Double Fourier Transform

    • K. N. Darji

    Short Communications 25 October 2021 Pages: 628 - 631

34. Locally Free Resolution of Coherent Sheaves in Arbitrary Dimension

    • N. V. Timofeeva

    Short Communications 25 October 2021 Pages: 632 - 637

35. Erratum to: Real-Imaginary Conjugacy Classes and Real-Imaginary Irreducible Characters in Finite Groups

    • A. Beltrán
    • S. M. Robati

    Erratum 25 October 2021 Pages: 638 - 639