1. Group algebras acting on the space of solutions of a special double confluent Heun equation

   • V. M. Buchstaber
   • S. I. Tertychnyi

   Research Articles 14 August 2020 Pages: 967 - 983

2. Airy functions and transition between semiclassical and harmonic oscillator approximations for one-dimensional bound states

   • A. Yu. Anikin
   • S. Yu. Dobrokhotov
   • A. V. Tsvetkova

   Research Articles 13 August 2020 Pages: 984 - 992

   

3. The KNTZ trick from arborescent calculus and the structure of the differential expansion

   • A. Yu. Morozov

   Research Articles 14 August 2020 Pages: 993 - 1019

   

4. Optimal time evolution for pseudo-Hermitian Hamiltonians

   • W. H. Wang
   • Z. L. Chen
   • Y. J. Fan

   Research Articles 13 August 2020 Pages: 1020 - 1032

5. Convergent perturbation theory for studying phase transitions

   • M. Yu. Nalimov
   • A. V. Ovsyannikov

   Research Articles 13 August 2020 Pages: 1033 - 1045

   

6. Quantifying non-Gaussianity via the Hellinger distance

   • Yue Zhang
   • Shunlong Luo

   Research Articles 13 August 2020 Pages: 1046 - 1058

7. Uniqueness and nonuniqueness conditions for weakly periodic Gibbs measures for the hard-core model

   • R. M. Khakimov
   • M. T. Makhammadaliev

   Research Articles 13 August 2020 Pages: 1059 - 1078

   

8. Deformation quantization of framed presymplectic manifolds

   • N. D. Gorev
   • B. M. Elfimov
   • A. A. Sharapov

   Research Articles 13 August 2020 Pages: 1079 - 1092

9. Two-photon propagation of light and the modified Liouville equation

   • A. M. Kamchatnov
   • M. V. Pavlov

   Research Articles 13 August 2020 Pages: 1093 - 1099