2024. vol. 48. no. 3

Contents
Message from the Editorial Board	5
MATHEMATICS
Arzikulov Z. O. Boundary value problems for the three-dimensional Helmholtz equation in the unbounded octant, square and half space	7
Balkizov Zh. A. The first boundary value problem for a model equation of parabolic-hyperbolic type of the third order	20
Ruziev M. Kh., Zunnunov R. T., Yuldasheva N. T., Rakhimova G. B. Bitsadze-Samarskii type problem for the diffusion equation and degenerate hyperbolic equation	33
Eneeva L. M. Cauchy problem for fractional order equation with involution	43
MATHEMATICAL MODELING
Alimova N. B. Mathematical modeling of the neuron autocoling in the cell membrane using the fractional model of FitzHugh-Nagumo with the function of irritant intensity	56
Kazakov E. A., Vodinchar G. M.. Stochastic two-mode hereditary model of a cosmic dynamo	70
Israyiljanova G. S., Karimov Sh. T., Parovik R. I. Mathematical fractional Zeeman model for describing cardiac contractions	83
Tverdyi D. A., Makarov E. O., Parovik R. I. Identification of parameters of the mathematical α-model of radon transport in the accumulation chamber based on data from the Karymshina site in Kamchatka	95
85 years of Professor M.M. Aripov	120
55 years to the Director of IAMA KBSC RAS A.V. Pskhu	123