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What is Euler's formula actually saying? | Ep. 4 Lockdown live math

3Blue1Brown · lecture · Watch on YouTube

Recreational & visual mathPure mathematics

What it is

A 3Blue1Brown live lockdown math episode asking what Euler's formula e^(pi i) is actually saying. It builds intuition through exponentials, rotation and vectors landing on the unit circle.

Why Hacker News recommends it

HN recommends it as the explanation that makes complex exponentials click, especially for understanding the Fourier transform.

  • 1 people recommended it
  • 1 different months
  • 1 strong recommendations
  • first 2020, last 2023

What HN commenters said

  1. “I was finally able to understand the role of complex numbers in the Fourier Transform.”

    Reframes e^x, unlocking understanding of complex numbers in Fourier

    rectang, 2023-01 · Strong recommendation · in “The Fourier Transform, explained in one sentence”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: euler, complex numbers, exponentials, 3blue1brown, fourier

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