Grinding for software interviews Updated 2025-07-16
If your kids are about to starve, fine, do it.
But otherwise, Ciro Santilli will not, ever, spend his time drilling programmer competition problems to join a company, life is too short for that.
Life is too short for that. Companies must either notice that you can make amazing open source software projects or contributions, and hire you for that, or they must fuck off.
Companies must either notice that you can make amazing projects or contributions, and hire you for that, or they must fuck off.
Group extension problem Updated 2025-07-16
Besides the understandable Wikipedia definition, Video "Simple Groups - Abstract Algebra by Socratica (2018)" gives an understandable one:
Given a finite group and a simple group , find all groups such that is a normal subgroup of and .
In particular, this is hard because you can't just take the direct product of groups to retrieve the original group: Section "Relationship between the quotient group and direct products".
Group homomorphism Updated 2025-07-16
Like isomorphism, but does not have to be one-to-one: multiple different inputs can have the same output.
The image is as for any function smaller or equal in size as the domain of course.
This brings us to the key intuition about group homomorphisms: they are a way to split out a larger group into smaller groups that retains a subset of the original structure.
As shown by the fundamental theorem on homomorphisms, each group homomorphism is fully characterized by a normal subgroup of the domain.
Bilinear map Updated 2025-07-16
Linear map of two variables.
More formally, given 3 vector spaces X, Y, Z over a single field, a bilinear map is a function from:
that is linear on the first two arguments from X and Y, i.e.:
Note that the definition only makes sense if all three vector spaces are over the same field, because linearity can mix up each of them.
The most important example by far is the dot product from , which is more specifically also a symmetric bilinear form.
Gülen movement Updated 2025-07-16
Ciro Santilli once was at student a hackthon, where he proposed working on OurBigBook.com to others.
The only person who showed interest was a follower of the sect.
It seems that they put a lot of emphasis in education.
Also, their self-name is Hizmet, which translates as "service".
That day, Mr. Fethullah Gülen gained some Cirocoins.
Bill Gates Updated 2025-07-16
The enemy?
It does not matter how many trillions you donate to charity, Bill. If you want to prove your point, make MS Word free and open source and port it to Linux. And then Window implements POSIX-compatible APIs and then deprecate non-POSIX APIs.
Video 1.
Bill Gates Jumps Over Chair
. Source.
Bill Haydon Updated 2025-07-16
Figure 1.
Bill Haydon played by Ian Richardson in the 1979 Tinker Tailor Soldier Spy (TV series)
Figure 2.
Bill Haydon played by Colin Firth in the 2011 Tinker Tailor Soldier Spy (film)
Gurdwara Updated 2025-07-16
Theses places give out free food all the time.
The first time Ciro Santilli went to one was when an Indian friend of his took him to the one in the North of Paris when they were living there in the first half of the 2010's, the Gurdwara Singh Sabha France.
Instead of just talking, those people really go out, and put food on the plate for anyone who needs it (or even for those that don't really need it! Although who would be so souless to eat for free and not donate a few bucks if they can afford to???). There's a beauty to that.
Writing this also remembered Ciro of non-religious groups that would give out free food to the poor at
Social inequality Updated 2025-07-16
Ciro Santilli is extremely passionate about this issue, partly due to Ciro Santilli's self perceived compassionate personality.
Ciro Santilli's main approaches to reduce it:
We have to be careful not to make everyone poorer when trying to reduce inequality.
But as things stand as of 2020, increasing taxes on the very richest, and notably wealth tax, and investing it in free gifted education, seems like a safe bet to achieve any meaningful level of equal opportunity and meritocracy.
During the early 2020s, many of the idiotic social media platforms started adding a non optional "feature" of suggesting feed posts by people you don't follow:
It must have been some A/B testing overload that made that decision to try and make things more addictive for everyone. Or perhaps as a way to drive revenue with people paying to cheat the algorithm and boost their posts.
European Union we need you.
Braindumping Updated 2025-07-16
There are two ways:
Yitang Zhang's theorem Updated 2025-07-16
There are infinitely many primes with a neighbor not further apart than 70 million. This was the first such finite bound to be proven, and therefore a major breakthrough.
This implies that for at least one value (or more) below 70 million there are infinitely many repetitions, but we don't know which e.g. we could have infinitely many:
or infinitely many:
or infinitely many:
or infinitely many:
but we don't know which of those.
The Prime k-tuple conjecture conjectures that it is all of them.
Also, if 70 million could be reduced down to 2, we would have a proof of the Twin prime conjecture, but this method would only work for (k, k + 2).
BrainSimII Updated 2025-07-16
The video from futureai.guru/technologies/brian-simulator-ii-open-source-agi-toolkit/ shows a demo of the possibly non open source version. They have a GUI neuron viewer and editor, which is kind of cool.
Video 1.
Machine Learning Is Not Like Your Brain by Charles Simon (2022)
Source.

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