In differential geometry, a **coordinate chart** is a mapping that defines a particular way of describing points in a manifold in terms of coordinates. A coordinate chart is essentially a homeomorphism from an open subset of the manifold to an open subset of Euclidean space. Together, a collection of coordinate charts that covers a manifold forms an **atlas**.
"Touch" is an American television series that aired on Fox from March 2012 to May 2013. Created by Tim Kring, the show stars Kiefer Sutherland as Martin Bohm, a widowed father who struggles to connect with his mute, autistic son, Jake, played by David Mazouz. The central premise revolves around Jake's extraordinary ability to see patterns and connections in numbers, which he uses to interpret global events and interconnected lives.
Mutual exclusivity is a concept used in various fields, including statistics, probability, logic, and decision-making. In general, it refers to a situation where two or more events, outcomes, or propositions cannot occur or be true simultaneously. For example: 1. **Probability**: In probability theory, two events are mutually exclusive if the occurrence of one event means that the other cannot occur.
Statistical regions are defined areas that are used for the collection, analysis, and presentation of statistical data. These regions are created to facilitate the comparison and aggregation of various demographic, economic, and social statistics across different geographical areas. The characteristics of statistical regions can vary widely based on the purpose of the analysis and the types of data being collected.
In physics, homogeneity refers to the property of a substance or system being uniform in composition and characteristics throughout. This can apply to various contexts, including materials, fields, and physical laws. 1. **Homogeneous Materials**: A homogeneous material has a consistent composition and properties at all points. For example, a pure substance like distilled water is considered homogeneous because its chemical composition and physical properties do not vary from one part of the sample to another.
Thomas Henry Havelock (1790–1857) was a British Army officer known for his role during the Indian Rebellion of 1857. He was particularly noted for his leadership in the recapture of Delhi and the relief of the besieged British garrison in Lucknow. Havelock's military career spanned several campaigns, but he gained fame for his effective command and quick actions during the uprising, where he successfully navigated difficult circumstances to perform notable military feats.
"Advanced Composite Materials" is a peer-reviewed scientific journal that focuses on the research and development of advanced composite materials. These materials typically consist of two or more constituent materials with significantly different physical or chemical properties that remain distinct at macroscopic scales. The combination often leads to enhanced properties such as increased strength, lower weight, improved durability, and better resistance to environmental factors.
A skew-symmetric graph, in the context of graph theory, refers to a special type of directed graph (digraph) that exhibits certain symmetrical properties in its edges.
Oleg Marichev is a distinguished Russian mathematician known for his contributions to both theoretical and applied mathematics. He has made significant advancements in areas such as functional analysis, operator theory, and mathematical statistics. Throughout his career, Marichev has published numerous research papers and has been involved in various academic and professional activities, including teaching and mentoring students in mathematics.
Arcady Zhukov is a name that may refer to multiple subjects, but in the context of popular culture or recent developments, it might not be widely recognized.

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