1. Sigma models as Gross–Neveu models

   • D. V. Bykov

   Research Articles 19 August 2021 Pages: 993 - 1003

   

2. On the quantum \(\mathfrak{osp}(1|2\ell)\) Toda chain

   • A. A. Gerasimov
   • D. R. Lebedev
   • S. V. Oblezin

   Research Articles 19 August 2021 Pages: 1004 - 1017

3. Representation of Bessel functions by the Maslov canonical operator

   • S. Yu. Dobrokhotov
   • D. S. Minenkov
   • V. E. Nazaikinskii

   Research Articles 19 August 2021 Pages: 1018 - 1037

   

4. On the evolution of states of controlled qubits

   • A. I. Kirillov
   • E. V. Polyachenko

   Research Articles 19 August 2021 Pages: 1038 - 1050

   

5. Algebraic quantum theory with maximal frequency

   • G. A. Kravzova

   Research Articles 19 August 2021 Pages: 1051 - 1060

6. Integrable extensions of classical elliptic integrable systems

   • M. A. Olshanetsky

   Research Articles 19 August 2021 Pages: 1061 - 1074

7. Quantum coin flipping, qubit measurement, and generalized Fibonacci numbers

   • O. K. Pashaev

   Research Articles 19 August 2021 Pages: 1075 - 1092

   

8. Elliptic solutions of the Toda lattice hierarchy and the elliptic Ruijsenaars–Schneider model

   • V. V. Prokofev
   • A. V. Zabrodin

   Research Articles 19 August 2021 Pages: 1093 - 1115

9. \(\ell\)-weights and factorization of transfer operators

   • A. V. Razumov

   Research Articles 19 August 2021 Pages: 1116 - 1143

10. On mathematical problems in the theory of topological insulators

    • A. G. Sergeev

    Research Articles 19 August 2021 Pages: 1144 - 1155

11. Quadratic algebras based on \(SL(NM)\) elliptic quantum \(R\)-matrices

    • I. A. Sechin
    • A. V. Zotov

    Research Articles 19 August 2021 Pages: 1156 - 1164