by soVeryTired
6 subcomments
- Anyone have a good explanation for why elliptic curves have a 'natural' group law? I've seen the definition of the group law in R before, where you draw a line through two points, find the third point, and mirror-image. I feel like there's something deeper going on though.
As far as I've seen, the group law is what makes elliptic curves special. Are they the _only_ flavour of curve that has a nice geometric group law? (let's say aside from really simple cases like lines through the origin, where you can just port over the additive group from R)
- I prefer a more generic form:
(y-a)(y-b) = (x-c)(x-d)(x-k)
By varying terms on both sides or making a term as a constant, you get generalizations for conics etc.
by jasonjmcghee
0 subcomment
- If folks have ever seen “ed25519” - say when generating an ssh key, and wondered what it meant and how that tiny thing could still be secure
https://en.wikipedia.org/wiki/EdDSA
by commandersaki
1 subcomments
- Dr Cook has been smashing out some excellent very digestible math content lately.
Edit: Just realised this was posted in 2019.
by Rakshath_1
0 subcomment
- [flagged]
- [flagged]
Hacker News