Sunday, April 7, 2019

real analysis - Convergence of sumin=1nftymu(n)J0(2n), where mu(n) is the Möbius function and J0(y) the Bessel function of the first kind

Let for integers n1 the Möbius function μ(n), see its definition from this MathWorld. And here J0(y) denotes the Bessel function of the first kind of order zero, see this MathWorld.




Question. What work can be done with the purpose to study if the series
n=1μ(n)J0(2n)
is convergent? Many thanks.




I don't know if our series is convergent. Using Wolfram Alpha online calculator one can to see that some partial sums, like next, of our series seem small in absolute value but erratic




sum mu(n)BesselJ(0,2n), from n=1 to 1000



sum mu(n)BesselJ(0,2n), from n=1 to 3000

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