Mathematics and Statistics Colloquium

Calvin University

Chris Moseley
Calvin University

January 29, 2026
3:05pm   •   North Hall 276

1 + 2 + 3 + 4 + … = -1/12 (?!?)

In 2014 the YouTube channel Numberphile posted an episode that said that 1 + 2 + 3 + 4 + … = -1/12. To see whether this is true or not, we will first consider some amazing results of Euler and Riemann.