Treewidth is a concept from graph theory that provides a measure of how "tree-like" a graph is. Specifically, the treewidth of a graph quantifies the minimum width of a tree decomposition of that graph. A tree decomposition is a way of representing a graph as a tree structure, where each node in the tree corresponds to a subset of vertices of the graph, satisfying certain properties.
The term "mean square" can refer to a couple of different concepts depending on the context, but it is often associated with statistical analysis and mathematics. 1. **Mean Square in Statistics**: In statistics, the mean square refers to the average of the squares of a set of values. It is commonly used in the context of analysis of variance (ANOVA) and regression analysis.
"Solid light" can refer to various concepts depending on the context in which it is used, but it often pertains to the idea of light being treated as a solid or having physical properties akin to solids. Here are a couple of interpretations: 1. **Physics and Optics**: In the context of physics, "solid light" might refer to the study of light's properties in a medium where it interacts strongly with matter.
"Rocket" can refer to different things depending on the context. Here are a few common meanings: 1. **Rocket (Spacecraft)**: A rocket is a vehicle designed to propel itself into space or deliver payloads to specific altitudes or velocities. Rockets are propelled by engines that expel gas or exhaust at high speed, utilizing Newton's third law of motion.
Hitori is a logic-based puzzle game that originated in Japan. The objective of Hitori is to fill in cells in a grid based on certain rules, which typically involve the numbers provided in the cells. The game is played on a rectangular grid filled with numbers. Here are the basic rules: 1. **Grid Structure**: The grid consists of a set of numbers, where each number represents how many times that number appears in its respective row and column.
Flux linkage is a key concept in electromagnetism and electrical engineering, particularly in the study of inductors and transformers. It refers to the total magnetic flux (\(\Phi\)) that links with a coil or a loop of wire. This concept is critical for understanding how inductors work and how electromagnetic induction occurs.
A shock tube is a device used primarily in experimental fluid dynamics and shock wave research to study the behavior of gases under shock wave conditions. It consists of a long, narrow tube divided into two segments by a diaphragm. One segment (the driver section) is filled with a high-pressure gas, while the other segment (the driven section) is filled with a low-pressure gas.
"Ngan" can refer to a few different things depending on the context: 1. **Currency**: In some contexts, especially in Southeast Asia, "ngan" is a unit of currency. For example, in Thailand, "ngan" is a traditional unit of measurement for silver and gold but is not commonly used in currency today. 2. **Names**: "Ngan" can also be a name, particularly in Vietnamese culture.
Isaac Horowitz is not a widely recognized figure in popular culture or history as of my last knowledge update in October 2023.
The term "engine" can refer to several different concepts depending on the context. Here are a few common interpretations: 1. **Mechanical Engine**: In a mechanical context, an engine is a machine designed to convert energy into mechanical work. This includes internal combustion engines (like those found in cars) and external combustion engines (like steam engines). Engines typically convert fuel into energy through processes involving combustion, heat exchange, or mechanical motion.
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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
Figure 5. . 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. 
- Infinitely deep tables of contents:
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