Bulletin KRASEC. Phys. & Math. 2025. vol. 50. no. 1

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2020-323

ISSN 2079-6641 (print)
ISSN 2079-665X (on-line)

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Contents
Message from the Editorial Board	7
MATHEMATICS
Djamalov S. Z., Sipatdinova B. K. On the smoothness of a semi-periodic boundary value problem for a three-dimensional equation of the second kind, second order mixed type in an unbounded domain	9
Islomov B. I., Kilishbayeva G. K. On a boundary value problem with third kind boundary conditions for a third-order mixed-type equation with an elliptic-hyperbolic principal operator	22
Khaydarov I. U., Zunnunov R. T. On a nonlocal boundary value problem for a parabolichyperbolic equation with two perpendicular lines of type change	39
Rasulov M. S., Jamoldinova Sh. M. A diffusive predator-prey system with a free boundary	62
Yuldasheva A. V. Peridynamic model of vibrations in a two-dimensional periodic structure	78
MATHEMATICAL MODELING
Kovalenko S. A., Chekanov V. S., Kandaurova N. V., Urtenov M. H. A method for the analytical study of autowave processes in weakly conductive and conductive liquids	92
Sarukhanian S. K. Approach to numerical assessment of the adequacy of a three-dimensional cellular-automaton model of the process of matter diffusion	111
Skovpen G. A., Parovik R. I. Mathematical modeling of radon transport in the aerated zone of porositic geomedium under conditions of its stress-strain state	134
INFORMATION AND COMPUTING TECHNOLOGIES
Tverdyi D. A. Analysis of efficiency of the hybrid parallel algorithm for numerical solution of the Cauchy problem for hereditary models of radon volumetric activity in FEVO software complex	149
Sergienko D. F., Parovik R. I. Investigation of the effectiveness of numerical methods for solving a mathematical model of high-frequency geoacoustic emission	169
80th anniversary of Academician of the Academy of Sciences of the Republic of Uzbekistan Sh. A. Alimov	184
70th anniversary of Professor R. R. Ashurov	190
In memory of Professor A.K. Urinov. On the 75th anniversary of his birth	197