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Mathematical notes of NEFU, 2024, Volume 31, Issue 1, Pages 22–35 (Mi svfu404)

Mathematics

The Hankel-Kiprianov-Katrakhov transform and singular K-pseudodifferential operators

Yu.N. Bulatov

I. A. Bunin Elets State University

Abstract: To study problems with the singular differential Bessel operator B−γ with a negative parameter −γ ∈ (−1, 0), the paper introduces an integral transformation based on the solution u=Jµ of the singular Bessel equation B−γ u+u=0, which is expressed through the Bessel function of the first kind with a positive parameter µ= γ+1 . An even and an odd K-Bessel (Hankel–Kipriyanov–Katrakhov) transform as well as a class of singular K-pseudodifferential operators are constructed. The main theorems on the orders of singular K-pseudodifferential operators with symbol from Ξm (Sobolev–Kipriyanov function spaces) and a theorem on products and commutators are proved.

Keywords: singular pseudodifferential operator, Hankel–Kipriyanov–Katrakhov transform, generalized pseudoshift, order of operators

UDC: 517.95

Received: 15.11.2023
Accepted: 29.02.2024

DOI: 10.25587/2411-9326-2024-1-21-34



© Steklov Math. Inst. of RAS, 2026