Last week I found out that the Basel problem was actually the inspiration for the Riemann Zeta function: http://www.fermatslibrary.com/s/a-proof-that-euler-miss

Last week I found out that the Basel problem was actually the inspiration for the Riemann Zeta function: http://www.fermatslibrary.com/s/a-proof-that-euler-missed#email-newsletter http://www.fermatslibrary.com/s/a-proof-that-euler-missed#em...