On one application of infinite systems of functional equations in function theory

Rok, strany: 2019, 117 - 144

The paper presents the investigation of applications of infinite systems of functional equations for modeling functions with complicated local structure that are defined in terms of the nega-$\tilde Q$-representation. The infinite systems of functional equations

$$ f(\hat φ^k(x)) = \widetilde β_ik+1,k+1+\widetilde p_ik+1,k+1f(\hat φ^k+1(x)), $$

where $k=0,1,… $, $x=Δ^{-\widetilde Q} _{i1(x)i2(x)… in(x)…}$, and $\hat φ$ is the shift operator of the $\widetilde Q$-expansion, are investigated. It is proved that the system has a unique solution in the class of determined and bounded on $[0,1]$ functions. Its analytical presentation is founded. The continuity of the solution is studied. Conditions of its monotonicity and nonmonotonicity, differential, and integral properties are studied. Conditions under which the solution of the system of functional equations is a distribution function of the random variable $η=Δ^{\widetilde Q} _{ξ1ξ2… ξn…}$ with independent $\widetilde Q$-symbols are founded.

ISO 690:

Serbenyuk, S. 2019. On one application of infinite systems of functional equations in function theory. In Tatra Mountains Mathematical Publications, vol. 74, no.2, pp. 117-144. 1210-3195. DOI: https://doi.org/10.2478/tmmp-2019-0024

APA:

Serbenyuk, S. (2019). On one application of infinite systems of functional equations in function theory. Tatra Mountains Mathematical Publications, 74(2), 117-144. 1210-3195. DOI: https://doi.org/10.2478/tmmp-2019-0024

Vydavateľ: Mathematical Institute, Slovak Academy of Sciences, Bratislava

Licensed under the Creative Commons Attribution-NC-ND4.0 International Public License.