hacker_news @feeds.twtxt.net Sat, 4 Nov 2023 23:35 Z (6 months ago) **Planes, Spheres and Pseudospheres** Article URL: https://www.gregegan.net/SCIENCE/PSP/PSP.html Comments URL: https://news.ycombinator.com/item?id=38146382 Points: 1 \# Comments: 0 โ Read more matched #x4rs44q score:13.6 Search by: type:rss conv:#x4rs44q author:hacker_news@feeds.twtxt.net