Retraction Note to: Approximation of Analytic Functions by Bessel Functions of Fractional Order
2020
We solve the inhomogeneous Bessel differential equation
$$ {x^2}y''(x) + xy'(x) + \left( {{x^2} - {\nu^2}} \right)y(x) = \sum\limits_{m = 0}^\infty {{a_m}{x^m},} $$
where ν is a positive nonintegral number, and use this result for the approximation of analytic functions of a special type by the Bessel functions of fractional order.
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