The Misleading Identity: 1+2+3+...=-1/12 Debunked

TLDRThe widely shared belief that the sum of the positive integers equals -1/12 is incorrect. The Numberphile video that popularized this idea made incorrect calculations based on an incorrect assumption. The correct definition for summing an infinite series shows that the sum of 1+2+3+... is actually infinite, not -1/12.

Key insights

🧐The widely shared belief that 1+2+3+... sums to -1/12 is incorrect

🤯The Numberphile video made incorrect calculations based on an incorrect assumption

The correct definition for summing an infinite series shows that the sum is infinite, not -1/12

💡Super summing can assign a value to some divergent series, but not all

🔍Super summing is a proper extension of normal summing, but has its own unique properties

Q&A

Why do people believe that 1+2+3+... equals -1/12?

The belief comes from a widely shared Numberphile video that made incorrect calculations and assumptions

What is the correct definition for summing an infinite series?

The correct definition assigns a sum to a series only if it converges to a finite limit

What is super summing?

Super summing is an extension of normal summing that assigns a value to some divergent series

Can super summing assign a value to any divergent series?

No, not all divergent series have a super sum

What are the properties of super summing?

Super summing is consistent with adding, shifting, and termwise multiplication by numbers

Timestamped Summary

00:00Introduction to the video content - debunking the belief that 1+2+3+... equals -1/12

05:51Explanation of the correct definition for summing an infinite series

10:47Introduction to the concept of super summing as an extension of normal summing

15:18Demonstration of super summing on selected divergent series

20:17Discussion on the limitations and properties of super summing