Ramanujan: Making sense of 1+2+3+... = -1/12 and Co.
Mathologer · 34:24 · Watch on YouTube
The claim 1+2+3+... = -1/12 is not true as a standard infinite sum, but it is the value of the analytic continuation of the Riemann zeta function at -1, which can be recovered by formal manipulations and generalized s...