2025. vol. 52. no. 3

Contents
Message from the Editorial Board	5
MATHEMATICS
Abdullah D., Hamoud J. Generalized natural density $\operatorname{DF}(\mathfrak{F}_k)$ of Fibonacci word	7
Hasanov A., Yuldashova H. A. New extended three-variable Mittag-Leffler type functions	24
Krishna K. M. Noncommutative spherical codes	44
Turdiev Kh. N. Nonlocal problem for the time-fractional hyperbolic-type equation with the Prabhakar fractional derivative	53
Eneeva L. M. Fractional integral equation with involution	63
MATHEMATICAL MODELING
Abazokov M. B. The method of rank bush optimization for the large branched stream networks with concave objective function	75
Vodinchar G. M., Kazakov E. A., Lisyutkin S.,S. Basic Modes Parameters and Geodynamo Spectral Models Coefficients Database	95
Zunnunov R. T., Rasulov M. S., Parovik R. I. A two-component competition model with two different free boundaries	111