This is a section about Linear algebra!

Linear algebra is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about Fundamental theorem of calculus!

Fundamental theorem of calculus is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

Check out: ourbigbook.com, a personal knowledge base that can publish from lightweight markup both to a multi-user mind melding dynamic website, or as a static website. It's like Wikipedia + GitHub + Stack Overflow + Obsidian. 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. 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. Opinions are my own, but they could be yours too. Tax the rich.

Let's create an educational system with:

I offer:

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.

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:

 -------------------------------------
|  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!

<iframe src="_raw/js/matterjs/examples.html#top-down-asdw-fixed-viewport" width="1000" height="850"></iframe>

Investors are becoming increasingly concerned about the possibility of losing money in the ever-changing world of cryptocurrencies due to a variety of issues like hacking, frauds, or basic human mistake. Selecting a trustworthy and knowledgeable crypto recovery specialist becomes crucial in such risky circumstances. REFUND POLICI RECOVERY SERVICE is a well-known American company that stands out for its proficiency, impressive client success rate, and positive customer reviews. How can I recover my stolen bitcoin from an investment scam? What is the best recovery company to help me recover my stolen Bitcoins? How to Hire a Hacker to Recover Stolen Crypto/Bitcoin? Can a hacked crypto be recovered? Yes, Go to REFUND POLICI RECOVERY SERVICE Best Cryptocurrency Recovery Company info: Email address: Refunddpolici @Gmail. com) WhatsApp: +1, 605, 963.9055 / +1 ( 972. 9 9 8 2 7 5 5 Telegram - @ Refunddpolici Website- refundpolici.wixsite.com/refund-policy

Created by the german chemist Carl Friedrich Claus, it makes it possible to convert hydrogen sulfide (from natural gas) to elemental sulfur.The overall reaction can be descibed as follows:

The Claus' process served as a better replacement of the Frasch process, which obtained elemental sulfur from naturally found deposits underground.

White is often seen as a symbol of purity and virtue (even the ancient Egyptians and Greeks shared this view ), thus there was a need for effective fabric whitening methods.

Since the ancient times, people used a widely available "bleaching product", the sun itself (the small amounts of UV radiation that reach the surface of the earth, break up bonds of stain molecules that are responsible for the colours that we perceive).

Later in ancient rome, before the invention of soap, other alkaline products were used as cleaning agents, such as urine (which breaks down to ammonia). These only removed the grease stains from the cloth, before it was left to dry and whiten in the sun.

Ultimately, from wood ashes a better cleaning product was made which was lye. Lye is used as the main ingredient is soap making. In the 17th century, the Dutch were leading the bleaching market. They invented a new method of bleaching which involved additions of bases and acid to the cloth. Firstly, the fabrics were soaked in lye in order to remove grease stains and then washed clean. Then they were spread out in specific places, called bleachfields. There, on the grass, they got whitened under the sun. This process was repeated several times. Lastly, sour milk was placed on the fabric in order to neutralize the bases added prior and once again a wash took place. This process was not only physically demanding, but also took months to finish.

Thankfully, after the discovery of elemental Chlorine by Karl Wilhelm Scheele, another scientist came up with a faster way to bleach clothes. He was Claude Berthollet, who made in 1789, what is known as "Eau de Javel" (commonly known as liquid bleach), which is a widely used bleach in laundry, cleaning and water treatment. That bleach consists of a solution of 3-6% NaClO.

Later, in 1798 Charles Tennant made a solution of $Ca(OCl{)}_2$ known as bleaching powder. Peroxide-based bleach only became popular in the 20th century, after being made in a century ago.

Oh I can write here...

Why couldn't I do that earlier?

A scribe is a person who serves a professional copyist. The work of scribes can involve copying manuscripts and other texts as well as secretarial and administrative duties such as the taking of dictation and keeping of business, judicial and historical records for kings, nobles, temples and cities. The profession has developed into public servants, journalists, accountants, bookkeepers, typists, and lawyers. One of the most important professionals in ancient Egypt was a person educated in the arts of writing and arithmetic. Scribes were considered part of the royal court, were not conscripted into the army, did not have to pay taxes and were exempt from the heavy manual labor required of the lower classes. Sons of scribes were brought up in the same scribal tradition, sent to school and inherited their fathers' positions upon entering the civil service. Much of what is known about ancient Egypt is due to the activities of its scribes and the officials. Monumental buildings were erected under their supervision, administrative and economic activities were documented by them, and stories from Egypt's lower classes and foreign lands survive due to scribes putting them in writing. In addition to accountancy and governmental politicking, the scribal professions branched out into literature. The first storeis were probably religious text. Other genres evolved, such as wisdom literature, which were collections of the philosophical sayings from wise men. These contain the earliest recordings of societal thought and exploration of ideas in some length and detail. In the Middle Ages, every book was made by hand. Specially trained scribes had to carefully cut sheets of parchment, make the ink, write the script, bind the pages and create a cover to protect the script. This was all accomplished in a writing room called a scriptorium which was kept very quiet so scribes could maintain concentration. A large scriptorium may have up to 40 scribes working. Scribes woke to morning bells before dawn and worked until the evening bells, with a lunch break in between. They worked every day except for the Sabbath. Scribes were only able to work in daylight, due to the expense of candles. The scribe was a common job in medieval European towns during the 10th and 11th centuries. Many were employed at scriptoria owned by local schoolmasters or lords. These scribes worked under deadlines to complete commissioned works such as historic chronicles or poetry. These scribes would meticulously record the information presented in the texts, but not mindlessly. In the case of herbals, for instance, there is evidence that the monks improved upon some texts, retracted textual errors, and made the text particularly relevant to the area in which they lived. Some scribes even went so far as to grow some of the plants included in the texts. They had little room or patience to disseminate the imaginary plants. The writers truly restricted themselves to only include practical information. Meanwhile, in the case of bestiaries, the scribes generally copied and cited previous texts to pass them on. Unlike the herbals, the scribes could not grow an animal in their garden, so largely the information taken from the bestiaries was taken at face value. In the 13th century, Paris was the first city to have a large commercial trade of manuscripts, with book producers being commissioned to make specific books for specific people. Paris had a large enough population of wealthy literate persons to support the livelihood of people producing manuscripts. Wait, why the paragraph break doesnt work at all?

I can not join your movement because I really have more reasons than other ones. For privacy, I can't explain that. And, For me, I know that for the current situations in China, I can't do anything. For China, I think only solution is revolution not reform. The protesters will die with nobody know that without tech. People could try, but it is a Way of Sacrifice. space.bilibili.com/355027238/dynamic chinadigitaltimes.net/chinese/667881.html According the report, this organization help programthink arrested. I research that for some days, and the evidences express its correctness. 净网志愿者协会, may one day you will be captured by them. But you are foreigner, they don't have a way to do that. 净网志愿者协会, it is a semi-official organization but with high-tech hacker technology. You know, in China, high-tech hackers will not be an offical. Because it is a semi-official organization with many young little-pink engineer, the tracking for programthink, it could be done. They are actually not wumao, but they may be more formidable opponent. But you live aboard, they can't do anything and officals will not always listen their views. Why do I think its claim for programthink's arrest is credible? Because some inference. The organization says programthink is 马勇康. github.com/programthink/zhao/issues/418 one year passed, 2022/05, offical media(only media) say 马某某，煽动分裂国家、煽动颠覆国家政权 baijiahao.baidu.com/s?id=1731886110528251526&wfr=spider&for=pc the 马 first name only has 1% population in China. Coincidence? And according the report's keyword: 浙江温州, 科技有限公司，“洗脑”，“人生导师”，顽固 just like a copycat keyword for programthink blog and it conforms characteristics. and the organization say 马勇康 is 山东人, the offical media say he is 浙江人 According the data in the website or anywhere: www.23mofang.com/ancestry/library-surname/5f34ee9eff5a3344d6a8aabe 浙江(ZheJiang province) have less 马 than 山东. And programthink family's post say programthink lastly has a business travel to a city in eastern China, you see 温州，浙江，上海，all keyword is about the eastern China. 温州 is a interesting keyword, if you search programthink's issues, it has a strange 温州 people, but no other Zhejiang province's county. And other crime such as 政治纲领, as I know for CCP cop, they need some more outstanding achievement. 继续调查中，because the CCP cop needs more news by the mouth even it is not neutral. And, it is possible that programthink think he could take the all blames on his shoulder maybe. These inference may is only inference by brain ———— we never know what is a truth. www.bilibili.com/video/BV14S4y1T7RT/?spm_id_from=333.999.0.0 净网志愿者协会 mentions programthink in the video. I only know that they may be the not many real high-tech little-pink and hackers and really can do that. They are more terrible cop, even sometimes, gov will not listen them. I don't know in 2022 the organizations like it will do what. Sometimes I think what is better? For my reasons I know I couldn't join yours. And I can't keep "doublethink"(ps: I'm not an official, official never doublethink). The only difference between China and 1984 may is the war is peace. China gov officials say China love peace, and in fact, CCP indeed take less war than other countries. But it is Chinese nature, may CCP also keep something. CCP is not worse like Russia, so it is more difficult, for any reform. And reform may not work too fast or really work, only revolution.

This is a section about Vector space!

Vector space is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about Abstract algebra!

Abstract algebra is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about Algebra!

Algebra is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about Derivative!

Derivative is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about Proof of the fundamental theorem of calculus!

Proof of the fundamental theorem of calculus is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about $L^p$ space!

$L^p$ space is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about Integral!

Integral is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about Mathematics!

Mathematics is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.