| 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 |
