from Hacker News

An interactive introduction to rotors from geometric algebra (2018)

by kjeetgill on 4/16/25, 12:01 AM with 3 comments

• by dang on 4/16/25, 2:49 AM

  Related. Others?

  Let's remove Quaternions from every 3D Engine (2018) - https://news.ycombinator.com/item?id=29512302 - Dec 2021 (38 comments)

  Let's remove quaternions from every 3D engine (2018) - https://news.ycombinator.com/item?id=22200260 - Jan 2020 (326 comments)

  Let's remove Quaternions from every 3D Engine - https://news.ycombinator.com/item?id=18365433 - Nov 2018 (175 comments)

• by kjeetgill on 4/16/25, 5:13 AM

  I'm pretty soft on this subject but one thing that's always bugged me when I see bivectors represented as a parallelograms is that different coplanar parallelograms of the same area are the same bivector algebraically but visually very different. It just feels confusing when you're trying to learn what it "is".