Hi, I read awhile ago a book on Riemann's works. I understand that there are close form of the Riemann zeta function for even number ( thanks Euler ?). In my book, there was no close form for the odd number of the Riemann zeta function.
1)Could anyone redirect me on study of the zeta function for odd number ?
2) Is there a way to proove the non-existence/existence of a close form ? ( I m pretty sure I didn't formulate that correctly, I can explain If needed)