activity
20012026
most citedOn the product formula and convolution associated with the index Whittaker transform

38 citations · 140 across the 60 of their papers we have counts for

collaborators

75 papers

math.CA2026

A proof of Askey's convexity conjecture

K. Castillo, S. Yakubovich

For , let be the Bessel function of the first kind and let be its second positive zero. Define by $$ \int_0^{j_{α,2}}u^{-β(α)}J_α(u)\,du=0.…

cond-mat.soft2026

Phoretic flow in a three-dimensional wedge geometry

Abdallah Daddi-Moussa-Ider, Semyon Yakubovich, Maciej Lisicki

Understanding how chemically induced surface transport generates fluid motion in confined geometries is essential for the rational design of microscale pumping devices and active m…

math.CA2026

The fractional Kontorovich-Lebedev transform

Semyon Yakubovich

We introduce the so-called fractional analog of the Kontorovich-Lebedev transform, modifying its kernel, which is the Macdonald function . Properties of this kernel as well…

math.CA2026

On the Macdonald-type function and its relation with index transforms and orthogonal polynomials

Semyon Yakubovich

We continue to investigate properties of the function which is associated with the Macdonald function in terms of the corresponding Fourier integral. In particula…

math.CA2026

New biorthogonal sequences generated by index integrals of the weight functions

Semyon Yakubovich

We exhibit new biorthogonal sequences generated by index integrals of the squares of the modified Bessel functions and gamma functions. The composition orthogonality, involving dif…

math.CA2025

Generalized product formulas for Whittaker's functions and a novel class of index transforms

Semyon Yakubovich

Generalized product formulas and index transforms, involving products of Whittaker's functions of different indices are established and investigated. The corresponding inversion fo…