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Fantastic Quaternions - Numberphile

Numberphile · explainer · Watch on YouTube

Recreational & visual mathPure mathematics

What it is

Numberphile's James Grime introduces quaternions, a type of number beyond the complex numbers, building up from real and complex numbers and explaining why they are useful.

Why Hacker News recommends it

HN recommends it as the simplest, most approachable introduction to quaternions, useful for people working in games and robotics.

  • 3 people recommended it
  • 3 different months
  • 2 strong recommendations
  • first 2016, last 2018

What HN commenters said

  1. “I also love the Numberphile explanation of quaternions (building up from real to complex numbers, etc.)”

    Builds quaternions up from real and complex numbers.

    skapadia, 2016-04 · Strong recommendation · in “Calculus Learning Guide”

  2. “Numberphile's explanation of Quaternions is the simplest I have seen so far”

    Simplest explanation of quaternions, useful for games and robotics.

    codesushi42, 2018-09 · Strong recommendation · in “Quaternions: the Strange Numbers That Birthed Modern Algebra”

  3. “This video might be easier to grasp”

    Easier-to-grasp introduction to quaternions.

    Tempest1981, 2018-10 · Recommendation · in “Visualizing quaternions: An explorable video series”

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

Topics: quaternions, complex numbers, hamilton, 3d rotation, numberphile

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