Nassim Nicholas Taleb @nntaleb
@EGKhoury 0 gives -1 + BesselJ[0, 2 x] for the summation which integrates to 1 The summation reduces for 2 s \in integers into the Gen Hypergeometric: HypergeometricPFQ[{}, {1,1,1,1,...2 s-1 times }, -x^2] — PolitiTweet.org
