1. Fundamental solution of the stationary Dirac equation with a linear potential

   • I. A. Bogaevsky

   Research Articles 21 December 2020 Pages: 1547 - 1563

   

2. Infinite number of eigenvalues of \(2{\times}2\) operator matrices: Asymptotic discrete spectrum

   • T. H. Rasulov
   • E. B. Dilmurodov

   Research Articles 21 December 2020 Pages: 1564 - 1584

3. Commutator identities and integrable hierarchies

   • A. K. Pogrebkov

   Research Articles 21 December 2020 Pages: 1585 - 1592

4. Calogero–Sutherland system at a free fermion point

   • M. G. Matushko

   Research Articles 21 December 2020 Pages: 1593 - 1610

5. Riemann–Hilbert problem for the modified Landau–Lifshitz equation with nonzero boundary conditions

   • Jin-Jie Yang
   • Shou-Fu Tian

   Research Articles 21 December 2020 Pages: 1611 - 1637

   

6. Obtaining multisoliton solutions of the (2+1)-dimensional Camassa–Holm system using Darboux transformations

   • Hui Mao

   Research Articles 21 December 2020 Pages: 1638 - 1651

   

7. Semiclassical asymptotic spectrum of the two-dimensional Hartree operator near a local maximum of the eigenvalues in a spectral cluster

   • A. V. Pereskokov

   Research Articles 21 December 2020 Pages: 1652 - 1665

8. Mutual transition of Andreev and Majorana bound states in a superconducting gap

   • Yu. P. Chiburin
   • T. S. Tinyukova

   Research Articles 21 December 2020 Pages: 1666 - 1681

9. A note on pair-dependent linear statistics with a slowly increasing variance

   • A. Aguirre
   • A. B. Soshnikov

   Research Articles 21 December 2020 Pages: 1682 - 1691

10. Dark \(f(\mathcal{R},\varphi,\chi)\) universe with Noether symmetry

    • M. F. Shamir
    • A. Malik
    • M. Ahmad

    Research Articles 21 December 2020 Pages: 1692 - 1705