An expansion based on the roots of
where is a Bessel function of the first kind, is called a Dini expansion.
An expansion based on the roots of
where is a Bessel function of the first kind, is called a Dini expansion.
Weisstein, Eric W. "Dini Expansion." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/DiniExpansion.html