Project-based learning by Ciro Santilli 37 Updated 2025-07-16
There is just one key gotcha: the project has to be useful.
bsdgames by Ciro Santilli 37 Updated 2025-07-16
There is great beauty here. Great beauty. It's pure terminal poetry.
The most canonical source code Ciro Santilli can find right now is: sources.debian.org/src/bsdgames/
Tree representation by Ciro Santilli 37 Updated 2025-07-16
This section is about ways in which you can represent a tree.
Trees are a specific type of graph, so any graph representation also provides a way to represent a tree.
Therefore this section will focus only on methods specific to tress, and which cannot be used for graphs in general.
Twin prime conjecture by Ciro Santilli 37 Updated 2025-07-16
Let's show them how it's done with primes + awk. Edit. They have a -d option which also shows gaps!!! Too strong:
sudo apt install bsdgames
primes -d 1 100 | awk '/\(2\)/{print $1 - 2, $1 }'
gives us the list of all twin primes up to 100:
0 2
3 5
5 7
11 13
17 19
29 31
41 43
59 61
71 73
Tested on Ubuntu 22.10.
Rubik's Cube solution by Ciro Santilli 37 Updated 2025-07-16
Video 1.
The algorithmic trick that solves Rubik's Cubes and breaks ciphers by polylog (2022)
Source. Talks about the Meet-in-the-middle algorithm.
Optical microscope by Ciro Santilli 37 Updated 2025-07-16
Definition not very nice, as it excludes X-ray crystallography, which is also photon based.
archive.org/details/toomanyrequests_20191110 says 15 archives / minute, but apparently aslo 15 retrievals per minutes on Wikipedia, after which 5 min blacklist. After that, you start getting some 429s, and after that, server refuses to connect at al.
CDX: no limits apparently, they might just throttle you? Made 10k requets on bash loop and was going fine. But not that if you get blacklisted by create/fetch requests blacklist, server fails to connect here as well.
Publish or perish by Ciro Santilli 37 Updated 2025-07-16
2023:
One of the world’s most cited scientists, Rafael Luque, suspended without pay for 13 years
The prolific chemist, who has published a study every 37 hours this year
You can't apparently fire someone in academia!
Rafael Luque, has been suspended without pay for the next 13 years

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