1. Extensions of nonnatural Hamiltonians

   • C. M. Chanu
   • G. Rastelli

   Research Articles 25 September 2020 Pages: 1101 - 1109

2. Recursion operators and hierarchies of \(\text{mKdV}\) equations related to the Kac–Moody algebras \(D_4^{(1)}\), \(D_4^{(2)}\), and \(D_4^{(3)}\)

   • V. S. Gerdjikov
   • A. A. Stefanov
   • M. V. Pavlov

   Research Articles 25 September 2020 Pages: 1110 - 1129

   

3. Centers of generalized reflection equation algebras

   • D. I. Gurevich
   • P. A. Saponov

   Research Articles 25 September 2020 Pages: 1130 - 1139

4. Extensions of the discrete KP hierarchy and its strict version

   • G. F. Helminck
   • V. A. Poberezhny
   • S. V. Polenkova

   Research Articles 25 September 2020 Pages: 1140 - 1153

5. Multiphase solutions of nonlocal symmetric reductions of equations of the AKNS hierarchy: General analysis and simplest examples

   • V. B. Matveev
   • A. O. Smirnov

   Research Articles 25 September 2020 Pages: 1154 - 1165

6. Hurwitz numbers from Feynman diagrams

   • S. N. Natanzon
   • A. Yu. Orlov

   Research Articles 25 September 2020 Pages: 1166 - 1194

7. Wronskian-type formula for inhomogeneous \(TQ\) equations

   • Rafael I. Nepomechie

   Research Articles 25 September 2020 Pages: 1195 - 1200

8. Multiplicative dynamical systems in terms of the induced dynamics

   • A. K. Pogrebkov

   Research Articles 25 September 2020 Pages: 1201 - 1208

9. Elliptic solutions of the semidiscrete B-version of the Kadomtsev–Petviashvili equation

   • D. S. Rudneva
   • A. V. Zabrodin

   Research Articles 25 September 2020 Pages: 1209 - 1215

10. Generating function for scalar products in the algebraic Bethe ansatz

    • N. A. Slavnov

    Research Articles 25 September 2020 Pages: 1216 - 1226

11. Relation between categories of representations of the super-Yangian of a special linear Lie superalgebra and quantum loop superalgebra

    • V. A. Stukopin

    Research Articles 25 September 2020 Pages: 1227 - 1243