Contents

Theoretical and Mathematical Physics

Vol. 220, No. 3, 2024

Research Articles

Wave propagation in the Kolmogorov–Petrovsky–Piscounov–Fisher equation with delay

S. V. Aleshin, S. D. Glyzin, and S. A. Kashchenko p. 1411  abstract

Method for estimating the number of zeros of the spatially one-dimensional Pauli–Jordan–Dirac function on spatial intervals using the Kronecker theorem

E. A. Karatsuba p. 1429  abstract

Nonlinear dynamics of a two-axis ferromagnet on the semiaxis

V. V. Kiselev p. 1440  abstract

Nonlocal symmetries of two 2-component equations of Camassa–Holm type

Ziqi Li, and Kai Tian p. 1471  abstract

Gauge transformations between three-component KP and three-component mKP hierarchies

Lin Sun, Chuanzhong Li, Ming Chen, and Wei Liu p. 1486  abstract

Riemann–Hilbert approach to coupled nonlinear Schrödinger equations on a half-line

Shun Wang, and Jian Li p. 1496  abstract

Explicit multiple solitons of the mixed Chen–Lee–Liu equation derived from the Riemann–Hilbert approach

Yumin Zheng, Yunqing Yang, Yongshuai Zhang, and Wei Liu p. 1515  abstract

Quasi-Grammian loop dynamics of a multicomponent semidiscrete short pulse equation

A. Inam, and M. ul Hassan p. 1530  abstract

Exact solution of the problem of the interaction between a point charge and an insulator with nonlinear susceptibility

A. A. Belov, M. A. Tintul, and P. A. Polyakov p. 1556  abstract

Boundedness-below conditions for a general scalar potential of two real scalar fields and the Higgs boson

Yisheng Song, and Liqun Qi p. 1567  abstract

On positive fixed points of operator of Hammerstein type with degenerate kernel and Gibbs measures

I. M. Mavlonov, Kh. N. Khushvaktov, G. P. Arzikulov, and F. H. Haydarov p. 1580  abstract