Such supports add in the case of the complex exponential kernels of the Fourier transform.Relying,in parallel,on the expression for the product of two Bessel kernels, if you see that very complicated expression, you will appreciate my question.

When we analyze a product of signals in the frequency space for their corresponding forms in the time space,in the Fourier case the two share the spectrum,i.e, their spectrums add,thanks to the good property of the Fourier kernels:e(ixt) .e(-ixt')=e(ix(t-t'),and nothing,by far, exists like that for the Bessel kernels.So,do we have only the numerical investigation?

A. J. Jerri