Check out: OurBigBook.com, the best way to publish your scientific knowledge. It's an open source note taking system that can publish from lightweight markup files in your computer both to a multi-user mind melding dynamic website, or as a static website. It's like Wikipedia + GitHub + Stack Overflow + Obsidian mashed up. Source code: github.com/ourbigbook/ourbigbook.
Sponsor me to work on this project: 100k USD = I quit me job and work on it one year full time. Status: ~144k / 200k USD reached: 1st year locked-in, 2nd year stretch goal open at 200k USD. 1M USD = I retire and do it forever. How to donate: Section "Sponsor Ciro Santilli's work on OurBigBook.com".
I reached 100k USD after a 1000 Monero donation, so I quit my job for 1 year starting 1st June 2024 to solve as many STEM courses as I can from a world leading university to try and kickstart The Higher Education Revolution. If I reach 200k USD, then I'll do it for two years instead. A second year greatly improve chances of success: year one I solve a bunch of courses, year two I come guns blazing with the content and expand further.
Mission: to live in a world where you can learn university-level mathematics, physics, chemistry, biology and engineering from perfect free open source books that anyone can write to get famous. More rationale: Section "OurBigBook.com"
Explaining things is my superpower, e.g. I was top user #39 on Stack Overflow in 2023[ref][ref] and I have a few 1k+ star educational GitHub repositories[ref][ref][ref][ref]. Now I want to bring that level of awesomeness to masters level Mathematics and Physics. But I can't do it alone! So I created OurBigBook.com to allow everyone to work together towards the perfect book of everything.
My life's goal is to bring hardcore university-level STEM open educational content to all ages. Sponsor me at github.com/sponsors/cirosantilli starting from 1$/month so I can work full time on it. Further information: Section "Sponsor Ciro Santilli's work on OurBigBook.com". Achieving what I call "free gifted education" is my Nirvana.
This website is written in OurBigBook Markup, and it is published on both cirosantilli.com (static website) and outbigbook.om/cirosantilli (multi-user OurBigBook Web instance). Its source code is located at: github.com/cirosantilli/cirosantilli.github.io and also at
cirosantilli.com/_dir
and it is licensed under CC BY-SA 4.0 unless otherwise noted.To contact Ciro, see: Section "How to contact Ciro Santilli". He likes to talk with random people of the Internet.
GitHub | Stack Overflow | LinkedIn | YouTube | Twitter | Wikipedia | Zhihu 知乎 | Weibo 微博 | Other accounts
Besides that, I'm also a freedom of speech slacktivist and recreational cyclist. I like Chinese traditional music and classic Brazilian pop. Opinions are my own, but they could be yours too. Tax the rich.
Let's create an educational system with:
- no distinction between university and high school, students just go as fast as they can to what they really want without stupid university entry exams
- fully open source learning material
- on-demand examinations that anyone can easily take without prerequisites
- granular entry selection only for space in specific laboratories or participation in specific novel research projects
I offer:
- online private tutoring for:
- any STEM university course
- passionate younger STEM students (any age) who want to learn university level material and beyond. Can your kid be the next Fields Medalist or Nobel Prize winner? I'm here to help, especially if you are filthy rich! I focus moving students forward as fast as they want on and on producing useful novel tutorials and results
Let your child be my Emile, and me be their Adolfo Amidei, and let's see how far they can go! I will help take your child:and achieve their ambitious STEM goals!- into the best universities
- into the best PhD programs
- educational consulting for institutions looking to improve their STEM courses
- do you know that course or teacher that consistently gets bad reviews every year? I'll work with the teacher to turn the problem around!
- are you looking to create a consistent open educational resources offering to increase your institutions internationally visibility? I can help with that too.
My approach is to:For minors, parents are welcome to join video calls, and all interactions with the student will be recorded and made available to parents.
- propose interesting research projects. The starting point is always deciding the end goal: Section "Backward design"
- learn what is needed to do the project together with the student(s)
- publish any novel results or tutorials/tools produced freely licensed online, and encourage the student to do the same (Section "Let students learn by teaching", digital garden)
I have a proven track of explaining complex concepts in an interesting and useful way. I work for the learner. Teaching statement at: Section "How to teach". Pricing to be discussed. Contact details at: Section "How to contact Ciro Santilli".
I am particularly excited about pointing people to the potential next big things, my top picks these days are:I am also generally interested in:
- 20th century physics, notably AMO and condensed matter
- the history of science, and in particular trying to look at seminal papers of a field
-------------------------------------
| Force of Will 3 U U |
| --------------------------------- |
| | //////////// | |
| | ////() ()\////\ | |
| | ///_\ (--) \///\ | |
| | ) //// \_____///\\ | |
| | ) \ / / / / | |
| | ) / \ | | / _/ | |
| | ) \ ( ( / / / / \ | |
| | / ) ( ) / ( )/( ) \ | |
| | \(_)/(_)/ /UUUU \ \\\/ | | |
| .---------------------------------. |
| Interrupt |
| ,---------------------------------, |
| | You may pay 1 life and remove a | |
| | blue card in your hand from the | |
| | game instead of paying Force of | |
| | Will's casting cost. Effects | |
| | that prevent or redirect damage | |
| | cannot be used to counter this | |
| | loss of life. | |
| | Counter target spell. | |
| `---------------------------------` |
| l
| Illus. Terese Nelsen |
-------------------------------------
A quick 2D continuous AI game prototype for reinforcement learning written in Matter.js, you can view it on a separate page at cirosantilli.com/_raw/js/matterjs/examples.html#top-down-asdw-fixed-viewport. This is a for-fun-only prototype for Ciro's 2D reinforcement learning games, C++ or maybe Python (for the deep learning ecosystem) seems inevitable for a serious version of such a project. But it is cute how much you can do with a few lines of Matter.js!
HTML snippet:
<iframe src="_raw/js/matterjs/examples.html#top-down-asdw-fixed-viewport" width="1000" height="850"></iframe>
These are the best articles ever authored by Ciro Santilli, most of them in the format of Stack Overflow answers.
Ciro posts update about new articles on his Twitter accounts.
A chronological list of all articles is also kept at: Section "Updates".
Some random generally less technical in-tree essays will be present at: Section "Essays by Ciro Santilli".
- Trended on Hacker News:
- CIA 2010 covert communication websites on 2023-06-11. 190 points, a mild success.
- x86 Bare Metal Examples on 2019-03-19. 513 points. The third time something related to that repo trends. Hacker news people really like that repo!
- again 2020-06-27 (archive). 200 points, repository traffic jumped from 25 daily unique visitors to 4.6k unique visitors on the day
- How to run a program without an operating system? on 2018-11-26 (archive). 394 points. Covers x86 and ARM
- ELF Hello World Tutorial on 2017-05-17 (archive). 334 points.
- x86 Paging Tutorial on 2017-03-02. Number 1 Google search result for "x86 Paging" in 2017-08. 142 points.
- x86 assembly
- What does "multicore" assembly language look like?
- What is the function of the push / pop instructions used on registers in x86 assembly? Going down to memory spills, register allocation and graph coloring.
- Linux kernel
- What do the flags in /proc/cpuinfo mean?
- How does kernel get an executable binary file running under linux?
- How to debug the Linux kernel with GDB and QEMU?
- Can the sys_execve() system call in the Linux kernel receive both absolute or relative paths?
- What is the difference between the kernel space and the user space?
- Is there any API for determining the physical address from virtual address in Linux?
- Why do people write the
#!/usr/bin/env
python shebang on the first line of a Python script? - How to solve "Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)"?
- Single program Linux distro
- QEMU
- gcc and Binutils:
- How do linkers and address relocation works?
- What is incremental linking or partial linking?
- GOLD (
-fuse-ld=gold
) linker vs the traditional GNU ld and LLVM ldd - What is the -fPIE option for position-independent executables in GCC and ld? Concrete examples by running program through GDB twice, and an assembly hello world with absolute vs PC relative load.
- How many GCC optimization levels are there?
- Why does GCC create a shared object instead of an executable binary according to file?
- C/C++: almost all of those fall into "disassemble all the things" category. Ciro also does "standards dissection" and "a new version of the standard is out" answers, but those are boring:
- What does "static" mean in a C program?
- In C++ source, what is the effect of
extern "C"
? - Char array vs Char Pointer in C
- How to compile glibc from source and use it?
- When should
static_cast
,dynamic_cast
,const_cast
andreinterpret_cast
be used? - What exactly is
std::atomic
in C++?. This answer was originally more appropriately entitled "Let's disassemble some stuff", and got three downvotes, so Ciro changed it to a more professional title, and it started getting upvotes. People judge books by their covers. notmain.o 0000000000000000 0000000000000017 W MyTemplate<int>::f(int) main.o 0000000000000000 0000000000000017 W MyTemplate<int>::f(int)
- IEEE 754
- What is difference between quiet NaN and signaling NaN?
- In Java, what does NaN mean?
Without subnormals: +---+---+-------+---------------+-------------------------------+ exponent | ? | 0 | 1 | 2 | 3 | +---+---+-------+---------------+-------------------------------+ | | | | | | v v v v v v ----------------------------------------------------------------- floats * **** * * * * * * * * * * * * ----------------------------------------------------------------- ^ ^ ^ ^ ^ ^ | | | | | | 0 | 2^-126 2^-125 2^-124 2^-123 | 2^-127 With subnormals: +-------+-------+---------------+-------------------------------+ exponent | 0 | 1 | 2 | 3 | +-------+-------+---------------+-------------------------------+ | | | | | v v v v v ----------------------------------------------------------------- floats * * * * * * * * * * * * * * * * * ----------------------------------------------------------------- ^ ^ ^ ^ ^ ^ | | | | | | 0 | 2^-126 2^-125 2^-124 2^-123 | 2^-127
- Computer science
- Algorithms
- Is it necessary for NP problems to be decision problems?
- Polynomial time and exponential time. Answered focusing on the definition of "exponential time".
- What is the smallest Turing machine where it is unknown if it halts or not?. Answer focusing on "blank tape" initial condition only. Large parts of it are summarizing the Busy Beaver Challenge, but some additions were made.
- Algorithms
- Git
| 0 | 4 | 8 | C | |-------------|--------------|-------------|----------------| 0 | DIRC | Version | File count | ctime ...| 0 | ... | mtime | device | 2 | inode | mode | UID | GID | 2 | File size | Entry SHA-1 ...| 4 | ... | Flags | Index SHA-1 ...| 4 | ... |
tree {tree_sha} {parents} author {author_name} <{author_email}> {author_date_seconds} {author_date_timezone} committer {committer_name} <{committer_email}> {committer_date_seconds} {committer_date_timezone} {commit message}
- How do I clone a subdirectory only of a Git repository?
- Python
- Web technology
- OpenGL
- What are shaders in OpenGL?
- Why do we use 4x4 matrices to transform things in 3D?
- Image Processing with GLSL shaders? Compared the CPU and GPU for a simple blur algorithm.
- Node.js
- Ruby on Rails
- POSIX
- What is POSIX? Huge classified overview of the most important things that POSIX specifies.
- Systems programming
- What do the terms "CPU bound" and "I/O bound" mean?
+--------+ +------------+ +------+ | device |>---------------->| function 0 |>----->| BAR0 | | | | | +------+ | |>------------+ | | | | | | | +------+ ... ... | | |>----->| BAR1 | | | | | | +------+ | |>--------+ | | | +--------+ | | ... ... ... | | | | | | | | +------+ | | | |>----->| BAR5 | | | +------------+ +------+ | | | | | | +------------+ +------+ | +--->| function 1 |>----->| BAR0 | | | | +------+ | | | | | | +------+ | | |>----->| BAR1 | | | | +------+ | | | | ... ... ... | | | | | | +------+ | | |>----->| BAR5 | | +------------+ +------+ | | | ... | | | +------------+ +------+ +------->| function 7 |>----->| BAR0 | | | +------+ | | | | +------+ | |>----->| BAR1 | | | +------+ | | ... ... ... | | | | +------+ | |>----->| BAR5 | +------------+ +------+
- Electronics
- Computer security
- Media
- How to resize a picture using ffmpeg's sws_scale()?
- Is there any decent speech recognition software for Linux? ran a few examples manually on
vosk-api
and compared to ground truth.
- Eclipse
- Computer hardware
- Scientific visualization software
- Numerical analysis
- Computational physics
- Register transfer level languages like Verilog and VHDL
- Android
- Debugging
- Program optimization
- Data
- Mathematics
- Section "Formalization of mathematics": some early thoughts that could be expanded. Ciro almost had a stroke when he understood this stuff in his teens.
- Network programming
- Physics
- Biology
- Quantum computing
- Bitcoin
- GIMP
- Home DIY
- China
Some people from them contacted Ciro Santilli after Ciro's initial publishing of CIA 2010 covert communication websites.
After a quick Discord chat with them, it was apparent that these people were really cool and knowledgeable.
Also many of them seem to think university is broken and just go hack straigh away.
A perfect example of a dojo learning model.
Also they don't seem to need sleep. Go figure!
With pepole like this, there's hope for Brazil: Section "What poor countries have to do to get richer".
The CIA really likes this registrar, e.g.:
- CIA 2010 covert communication websites
- 2014 www.newsweek.com/former-cia-officials-ready-defend-agency-after-torture-reports-release-290383A group of former CIA officials are gearing up to defend the agency when the Senate releases its long-awaited report investigating "enhanced interrogation" tactics used on prisoners after 9/11. The highlight of their PR push will be a website, "CIASAVEDLIVES.COM," which is set to go live when the report is released on Tuesday, Foreign Policy reported.The domain was registered on November 2 under a private registration name, through DomainsByProxy, a company that guards the identity of registrants.
Deep psychological analyses:
- Hacker News user MichaelZuo comments on a post about CIA 2010 covert communication websites:
Yeah [the website] seems a bit odd, as if the author is intentionally trolling in some areas, or is easily susceptible to being trolled by random folks, and thus displaying some kind of compensation dynamic.
- www.reddit.com/r/China_irl/comments/1bn47e5/comment/kwgkl88/ user
Opening_Gazelle_1323
comments:Can your kid be the next Fields Medalist or Nobel Prize winner? I'm here to help, especially if you are filthy rich!
三西猴老哥这一张嘴⏰味拉满,可以封为荣誉中国人Brother Sanxihou’s mouth is so full of flavor that he can be named an honorary Chinese. - www.reddit.com/r/Monero/comments/1brryao/ciro_santilli_received_a_1000_xmr_donation_to/ from 1000 Monero donation user
Inaeipathy
:;It reads like an ode to himself, very strange in my opinion. I don't really know what's up with the black-green text scheme, I can barely read any of it.
- archive.is/W1ocv originally boards.4channel.org/g/thread/75097729/who-is-this-guy on 4chan:
a based retard
Is that his own personal site where he has just listed everything he has ever done? Based.
He refers to himself in the third person, because gender has non place in the Sciences. Based autismo.
Holy based. Keep up the good work my man.
People love green on black mostly.
news.ycombinator.com/item?id=38492304 about Section "CIA 2010 covert communication websites":
- user
thewildginger
:Nothing like finding a webpage you can read from Lynx.
- user
socketcluster
:Based on the choice of fonts and colors, you know this is a serious hacker website ;p
At www.reddit.com/r/numberstations/comments/14dexiu/comment/jordtjc Reddit user
Short_Ad_7853
:Jesus that is an interesting choice of colors
www.reddit.com/r/Monero/comments/1brryao/ciro_santilli_received_a_1000_xmr_donation_to/ from 1000 Monero donation:
- user
-TrustyDwarf-
:Anyone mind to explain wtf this ugly piece of webpage reminding me of geocities from the 90s is about? I'd read it myself but I can't because it already gave me eye cancer.
- user
rbrunner7
:It's all quite strange. Never mind the 90s design, people built good websites already back then with the tools at hand, but even their "About" isn't very clear. If you need 5 minutes to be reasonably sure what it is all about they are still doing it wrong.
automobi1e
I'd rather take a look at the welding
The anonymity of the donation is mind blowing.
The first sensation Ciro Santilli got was as if God himself had come down from heaven to toy with an unsuspecting human being. God running an experiment. Or perhaps an AGI that had already secretly taken over. Not very different.
Like with God, this was the answer to Ciro's prayers on Twitter. A one way conversation that leaves you uncertain of the details.
Whichever the case, Ciro is going to put on the best show he possibly can for your money, documenting every step along the way in usual fashion!
Besides the awesomeness however, anonymity is a risk.
Ciro ran this over and over in his head, and the only big risk of anonymity is that if this money is ever proven to be from the proceeds of crime, he would have to give it back to the government and "lose one year's salary he would have otherwise gained".
However, that worst case scenario is not bad enough. If anything, it was a great excuse to quit his job for his family and wife is already worth it. Ciro could do it and survive, though situation would deteriorate slowly. But he was a coward previously.
Ciro does however feel that there is good chance that it is legitimate.
Ciro Santilli's Stack Overflow contributions are exceptional, he's amazing right! He deserves this! Of course, there is danger in this rationale which scammers could exploit. But bro, if scammers are going to send 100k USD to me, then please continue to do so!
Also which criminal would be stupid enough to donate proceeds of crime to a highly public person who is going to clearly announce it?
Just be warned, if you come with a baseball bat trying to get the money back by force, I will call the police immediately and by God you will not get it!!
Given this, Ciro just keeps thinking about the likely profile of the donor:
But the "why anonymous if not criminal" question remains. Generally rich people want recognition both for:Two options that come to mind:
- reputation washing
- to make their donation mechanisms higher profile which allows raising more and attracting better candidates and reach greater impact
- rich crypto dude that doesn't want thieves to know he is rich
- more public rich person that doesn't want association with Ciro Santilli's naughty projects, notably Ciro Santilli's campaign for freedom of speech in China, but perhaps also CIA 2010 covert communication websites, which could hurt business.
- crazy rich person with a philosophy of "if they knew who I was it might interfere with what they do". AKA a God.
I edited the VOD of the talk Aratu Week 2024 Talk by Ciro Santilli: My Best Random Projects about the CIA 2010 covert communication websites a bit and published it at: www.youtube.com/watch?v=QWL7l-5r1a4.
Getting a list of all currencies from Wikidata with SPARQL Updated 2024-12-15 +Created 2024-11-18
This one was way harder than my previous fun with "find the oldest people who won a given prize" (Nobel Prize/Oscar) mastodon.social/@cirosantilli/112689376315990248 because unlike those prizes where all the decisions are centralized, countries are much more complicated beasts, with changing currencies and international recognition.
This was a good experience to see a few ways in which Wikidata is inconsistent, with the same concept being expressed in multiple different ways, e.g. "end time" property of the current vs the superior "end time" qualifier.
Particularly bad is the notion of a "deprecated rank", that should really not exist.
This is exactly the type of semi interactive data munching that I like to do, a bit in the same vein as CIA 2010 covert communication websites and Cool data embedded in the Bitcoin blockchain.
As you might imagine, the secret services use exactly this type of knowledge modelling to do their dirty business, e.g. Gaffer by the GCHQ.
If only I weren't such a rebel, I'd be a perfect fit for the intelligence agencies.
This is the best monstrosity I had the patience to come up with:It got quite close to the ISO 4217 list.
SELECT
?currency
(GROUP_CONCAT(DISTINCT ?currencyIsoCode; SEPARATOR=", ") AS ?currencyIsoCodes)
?currencyLabel
(GROUP_CONCAT(DISTINCT ?countryLabel; SEPARATOR=", ") AS ?countries)
WHERE {
?country wdt:P31/wdt:P279* wd:Q6256. # is country
?country p:P38 ?countryHasCurrency.
?countryHasCurrency ps:P38 ?currency.
?countryHasCurrency wikibase:rank ?countryHasCurrencyRank.
OPTIONAL {
?currency p:P498 ?currencyHasIsoCode.
?currencyHasIsoCode ps:P498 ?currencyIsoCode.
}
FILTER NOT EXISTS {?country wdt:P576 ?countryAbolished}
FILTER NOT EXISTS {?currency wdt:P576 ?currencyAbolished}
FILTER NOT EXISTS {?currency wdt:P582 ?currencyEndTime}
FILTER NOT EXISTS {?countryHasCurrency pq:P582 ?countryHasCurrencyEndtime}
FILTER (?countryHasCurrencyRank != wikibase:DeprecatedRank)
FILTER (!bound(?currencyHasIsoCode) || ?currencyHasIsoCode != wikibase:DeprecatedRank)
# TODO makes query take timeout? Why? Needed to exclude PLZ.
FILTER NOT EXISTS {?currencyHasIsoCode pq:P582 ?currencyHasIsoCodeEndtime}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
?currency rdfs:label ?currencyLabel .
?country rdfs:label ?countryLabel .
}
}
GROUP BY ?currency ?currencyLabel
ORDER BY ?currencyIsoCodes ?currencyLabel
I was drawn into this waste of time after I noticed that someone had managed to create the Wikipedia of PsiQuantum which I had tried earlier but got deleted: mastodon.social/@cirosantilli/113488891292906243, and then I made the mistake of having a look at the Wikidata page of PsiQuantum.
Announcements:
I also had one more fun with: opendata.stackexchange.com/questions/15750/structured-data-for-nobel-prizes/21847#21847 getting some basic info about Nobel Prize winners, and noticed one, John Sulston, 2002 Nobel Prize in Physiology and Medicine laureate, who likely has the wrong place of birth on his Nobel Prize profile: www.nobelprize.org/prizes/medicine/2002/sulston/facts/ which is funny. I suggested the change now. Edit they fixed it after I pointed it out:
Another highlight was 1913 Nobel Prize in Chemistry laureate Alfred Werner who born either in Mulhouse in Alsace, France, or in "Yo no sé qué me pasó" ("I don't know what happened to me" in Spanish), a 1986 song by Mexican singer Juan Gabriel.
Announcements:
Also at opendata.stackexchange.com/questions/21849/how-to-get-a-list-of-all-nobel-prize-winners-who-never-had-a-doctorate-from-wiki/21850#21850 I tried to get the list of Nobel Prize laureates who don't have a PhD. I think the query was correct, but Wikidata data is just too incomplete. Related: