Complete biorthogonal systems of Bessel functions

Journal Title: Математичні Студії - Year 2017, Vol 48, Issue 2

Abstract

Let ν≥−1/2 and (ρk)k∈N be a sequence of nonzero complex numbers such that ρ2k≠ρ2m for k≠m. We prove that if the system {xρk−−−√Jν(xρk):k∈N} of Bessel functions of the first kind of index ν≥−1/2 is exact (i.e. complete and minimal) in the space L2(0;1), then its biorthogonal system is also exact in L2(0;1).

Authors and Affiliations

Bohdan Vynnyts’kyi, Ruslan Khats'

Keywords

Related Articles

The best approximations and widths of the classes of periodical functions of one and several variables in the space B∞,1

We obtained exact-order estimates of the best approximations of classes BΩ∞,θ of periodic functions of many variables and for classes Bωp,θ,1≤p≤∞ of functions of one variable by trigonometric polynomials with correspondi...

Homomorphisms between rings with infinitesimals and infinitesimal comparisons

We examine an argument of Reeder suggesting that the nilpotent infinitesimals in Paolo Giordano's ring extension of the real numbers ∙R are smaller than any infinitesimal hyperreal number of Abraham Robinson's nonstandar...

A note on bornologies

A bornology on a set X is a family B of subsets of X closed under taking subsets, finite unions and such that ⋃B=X. We prove that, for a bornology B on X, the following statements are equivalent: (1) there exists a vecto...

Weak solutions to the complex Monge-Ampere equation on open subsets of Cn

In the paper, we prove the existence of weak solutions to the complex Monge-Ampere equation in the class D(Ω) on an open subset Ω of Cn.

Note on separately symmetric polynomials on the Cartesian product of ℓ1

In the paper, we describe algebraic bases in algebras of separately symmetric polynomials which are defined on Cartesian products of n copies of ℓ1. Also, we describe spectra of algebras of entire functions, generated by...

Download PDF file
  • EP ID EP302524
  • DOI 10.15330/ms.48.2.150-155
  • Views 59
  • Downloads 0

How To Cite

Bohdan Vynnyts’kyi, Ruslan Khats' (2017). Complete biorthogonal systems of Bessel functions. Математичні Студії, 48(2), 150-155. https://europub.co.uk/articles/-A-302524