TIL about Leonhard Euler (1707-1783) who not only popularised the use of lower case Pi to denote the ratio of a circle’s circumference to it’s diameter, but was also the first to use “i” to denote the square root of -1. The constant “e”, the base number in a natural logarithm is the Euler Number

Read more: https://en.wikipedia.org/wiki/Leonhard_Euler

What do you think?

12 Points
Upvote Downvote


Leave a Reply
  1. “Hey man, what’s the ratio of a circle’s circumference to its diameter?”

    “Uh, π.”

    “How about the square root of -1, what’s that?”


    “Cool, hey I’m looking to solve for the base of the natural logarithm. Can you help?”

    “Sure, it’s e.”

    “Do you know any fucking math?”

Leave a Reply