The Rise and Fall of Quaternions: Why We Use i, j, and k in Vector Calculus | Deep Dive Maths

Discover the fascinating history behind the Cartesian unit vectors i, j, and k, and their connection to the world of quaternions! Join Prof. Jeff Chasnov as he takes you on a journey through the history of mathematics, revealing how quaternions spurred the development of vector calculus. Don't miss this captivating story that combines math, history, and the intense vector algebra wars of the late 1800s resulting in the banishment of quaternions from physics!

00:10 Part 1: Introduction
01:07 Part 2: Real and Complex Numbers
04:36 Part 3: Quaternions
13:26 Part 4: The Vector Algebra War

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