Here’s another cute math problem. Does
\[ \sum_{m=1}^\infty\sum_{n=1}^\infty\frac{1}{m^2+n^2} \]
converge or diverge? I’ll post my solution in a day or two.
Here’s another cute math problem. Does
\[ \sum_{m=1}^\infty\sum_{n=1}^\infty\frac{1}{m^2+n^2} \]
converge or diverge? I’ll post my solution in a day or two.