HackerTube / Video
The determinant | Chapter 6, Essence of linear algebra
3Blue1Brown
A 10-minute 3Blue1Brown chapter explaining the determinant as the factor by which a linear transformation scales area or volume. It builds the idea geometrically with animations before any formulas.
HN repeatedly points people to it as the clearest visual intuition for determinants, often saying it finally made the concept click.
7 Hacker News mentions · 2019–2024