2025. vol. 50. no. 1

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

Contents
Message from the Editorial Board7
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 domain9
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 change39
Rasulov M. S., Jamoldinova Sh. M. A diffusive predator-prey system with a free boundary62
Yuldasheva A. V. Peridynamic model of vibrations in a two-dimensional periodic structure78
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 liquids92
Sarukhanian S. K. Approach to numerical assessment of the adequacy of a three-dimensional cellular-automaton model of the process of matter diffusion111
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 complex149
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. Alimov184
70th anniversary of Professor R. R. Ashurov190
In memory of Professor A.K. Urinov. On the 75th anniversary of his birth197