UF2 by Ciro Santilli 37 Updated 2025-07-16
A Microsoft format for flashing microcontrollers by copying files to a magic filesystem mounted on host, e.g. as done on the Micro Bit and Raspberry Pi Pico.
LaTeX by Ciro Santilli 37 Updated 2025-07-16
Revolutionary for its time, and a big part of Ciro's Enlightenment.
But too insane, and did not keep up with internet age, and so Ciro wants to kill it now.
KaTeX by Ciro Santilli 37 Updated 2025-07-16
Default mathematics typesetting used in OurBigBook Markup.
Key issues:
Softcover (LaTeX) by Ciro Santilli 37 Updated 2025-07-16
LaTeX subset that output nicely to HTML.
Too insane though due to LaTeX roots, better just move to newer HTML-first markups like OurBigBook Markup or markdown.
MathBook XML by Ciro Santilli 37 Updated 2025-07-16
XML, ain't nobody ever going to write that manually.
Pandoc by Ciro Santilli 37 Updated 2025-07-16
This is good software.
If it only it were written in JavaScript instead of Haskell (!?), then Ciro might have used it as the basis for OurBigBook Markup.
Ciro Santilli was contributing to this, when CommonMark left private mode and killed it, thus wasting many hours of Ciro's time.
One of the main reasons why physicists are obsessed by this topic is that position and momentum are mapped to the phase space coordinates of Hamiltonian mechanics, which appear in the matrix mechanics formulation of quantum mechanics, which offers insight into the theory, particularly when generalizing to relativistic quantum mechanics.
One way to think is: what is the definition of space space? It is a way to write the wave function such that:And then, what is the definition of momentum space? It is of course a way to write the wave function such that:
CommonMark by Ciro Santilli 37 Updated 2025-07-16
CommonMark is a good project. But its initial release method was not very nice, they first developed everything behind closed doors with the big adopters like GitHub and Stack Overflow, and only later released the thing read, thus wasting the time of people who were working on alternative in the meanwhile, e.g. github.com/karlcow/markdown-testsuite which Ciro contributed to: Ciro Santilli's minor projects.
Ship abandonment refers to the situation where a vessel is left by its crew, typically due to dangerous conditions or the ship becoming unmanageable. This can occur in various circumstances, such as severe weather, mechanical failures, or after a ship has run aground. When a ship is abandoned, it may pose environmental hazards, particularly if it is left in navigable waters or if it contains hazardous cargo or materials.
"Tap tap" can refer to a few different things depending on the context: 1. **Tap Tap (App)**: In the context of mobile applications, "Tap Tap" often refers to the app store for Android devices, particularly in regions where Google's Play Store is restricted or unavailable. Tap Tap allows users to download and share apps, games, and other digital content.
Transmetro is a bus rapid transit (BRT) system in Barranquilla, Colombia. It was inaugurated in 2010 and serves as an essential part of the city's public transportation infrastructure. The system is designed to provide efficient, rapid, and reliable transit options for residents and visitors, helping to alleviate traffic congestion and improve air quality in the area. The Transmetro network includes dedicated bus lanes, modern vehicles, and integrated stops that allow for quick boarding and transferring between routes.

Pinned article: Introduction to the OurBigBook Project

Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
We have two killer features:
  1. topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculus
    Articles of different users are sorted by upvote within each article page. This feature is a bit like:
    • a Wikipedia where each user can have their own version of each article
    • a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
    This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.
    Figure 1.
    Screenshot of the "Derivative" topic page
    . View it live at: ourbigbook.com/go/topic/derivative
  2. local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:
    This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
    Figure 2.
    You can publish local OurBigBook lightweight markup files to either https://OurBigBook.com or as a static website
    .
    Figure 3.
    Visual Studio Code extension installation
    .
    Figure 4.
    Visual Studio Code extension tree navigation
    .
    Figure 5.
    Web editor
    . You can also edit articles on the Web editor without installing anything locally.
    Video 3.
    Edit locally and publish demo
    . Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.
    Video 4.
    OurBigBook Visual Studio Code extension editing and navigation demo
    . Source.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact