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when toggle format what by license comment
Jan 1, 2021 at 16:49 history edited Gerald Edgar CC BY-SA 4.0
added 182 characters in body
Jan 1, 2021 at 16:31 comment added user161698 Thanks for the answer Gerald. I should have been more specific when I said "for the usual conditions." This identity follows from assuming $\ell$ and $\ell'$ are the zeros of the Bessel function.
Jan 1, 2021 at 16:29 history answered Gerald Edgar CC BY-SA 4.0