1
All Hail Geometric Algebra
Rotate a cube by 90 degrees around the \(x\)-axis, then rotate it by 90 degrees around the \(z\)-axis. This is equivalent to a single rotation. What is the axis and angle of this single rotation?
Ben Lynn
A cabinet of computational curiosities: context-free parser , Enigma , geometric algebra , Life , neural network .
- Popular posts
- 5
- Total points
- 989
- HN comments
- 423
- Rank
- #2,219 personal
Visit crypto.stanford.edu/~blynn → On Hacker News Jun 2012 – Mar 2021
Software Engineering 4Programming Languages 3Systems & Performance 1Security & Privacy 1Math & Algorithms 1
2
Why Learn Haskell? (2018)
Asking a "why?" question means we want to be told a reason. But would we accept any reason? It seems not, for if any answer suffices, then the answer is irrelevant, so why bother asking?
3
C vs GO
Go was born out of frustration with existing languages and environments for systems programming.
4
Get a Life
When I was a kid, I wrote a BASIC program to explore Conway’s Game of Life on my 8088. It was painfully slow, so I began an assembly rewrite. But I failed at Life: I abandoned the project in frustration because I kept freezing up my system.
5
64-Bit Linux Return-Oriented Programming
Update : Dongli Zhang reports that newer Linux versions organize the stack differently . The code below will need to be modified accordingly.