Top all-time · #10741
Peeter Joot
Personal blog · peeterjoot.commathscienceprogramming
Peeter Joot's personal blog at peeterjoot.com covers math, science and programming. Since 2017, 7 different Hacker News readers have linked it 10 times, most often “Geometric Algebra for Electrical Engineers”. It is still writing: the last post was on 2026-08-28, and you can follow it by feed.
Too few sampled comments (6) to say how often HN recommends it.?
Why HN links it
HN readers link Peeter Joot's posts on geometric algebra and its use in electromagnetism, including how Maxwell's equations reduce to a single equation. Some also point to his Clifford algebra writing.
Summarised by Claude from a sample of 6 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
[Click here for a PDF version of this post] Motivation My friend's son is an exceptional little guy. I think he's about 12 or so, but he's already half way through our old 1st year calculus book. When they visited, he was intensely dissatisfied with an "obvious" statement that the center of mass nec
Most-linked posts?
- Geometric Algebra for Electrical Engineers3 people · 3 mentions · first linked 2020-02-14
What Hacker News says?
Quaternion was crucial and instrumental tool in Maxwell discovery and the formulation of the electromagnetics (EM) equations. When Terence Tao was asked how come nobody has proof of the Riemann hypothesis, arguably the hardest of the Math problems, and according to him this is because there is no appropriate tools available at the moment to proof it. I'm not a mathematician but I've got a strong feeling that quatern…
Comment linking /2018/03/05/a-derivation-of-the-quaternion-maxwells-equations-using-geometric-algebra/
on “An intuitive guide to Maxwell's equations (2020)”Submitted Exploring Physics with Geometric Algebra, Book I [pdf] (2016) as a story · 130 points
HN discussionGeometric algebra has some striking electromagnetism applications. We are able to eliminate the chaotic mess of signs, divergences and curls that we have in Maxwell's equations and write it as a single equation, that essentially has the structure D F = J, where D is a differential operator, F = E + I B is a combined electromagnetic field, and J contains the charge and current densities. Geometric algebra is not uniq…
Comment linking /writing/geometric-algebra-for-electrical-engineers/
on “Ganja.js: Geometric Algebra Generator for JavaScript, C++, C#, Rust, Python”Submitted Geometric Algebra for Electrical Engineers as a story · 2 points
HN discussionYou might enjoy http://peeterjoot.com/writing/geometric-algebra-for-electric... https://www.academia.edu/21674685/Geometric_Algebra_for_Elec...
Comment linking /writing/geometric-algebra-for-electrical-engineers/
on “Introduction to Clifford Algebra (2006)”Submitted Geometric Algebra for Electrical Engineers as a story · 1 points
HN discussionThat's basically it, this might help: http://peeterjoot.com/2019/09/20/an-example-of-linux-glibc-s...
Comment linking /2019/09/20/an-example-of-linux-glibc-symbol-versioning/
on “Linux and Glibc API Changes”Submitted Peeking into relocation of function static in shared library as a story · 1 points
HN discussionYes. In physics. E.g. Maxwell's equation reduces to a single equation in geometric Algebra: https://peeterjoot.com/archives/geometric-algebra/maxwells_g...
Comment linking /archives/geometric-algebra/maxwells_ga.pdf
on “Why can't you multiply vectors? [video]”Oliver Heaviside and Lord Kelvin both considered it as an evil concept and strongly believed that Maxwell was misled by using it to derive Maxwell's Equations. Heaviside then come up with the famous modern version of Maxwell's Equations with four equations but now ironically all of them can be represented with one concise single equation using quaternion based on geometric algebra [1]. It's probably worth to mention…
Comment linking /2018/03/05/a-derivation-of-the-quaternion-maxwells-equations-using-geometric-algebra/
on “Quaternions, Interpolation and Animation [pdf]”
