Giorgi Dvali is a theoretical physicist known for his work in the fields of particle physics, cosmology, and string theory. He is particularly prominent for his research on concepts such as extra dimensions, the hierarchy problem, and theories of gravity. One of his notable contributions is the "large extra dimensions" paradigm, which suggests that extra spatial dimensions might exist and could help explain why gravity is weaker than other fundamental forces at macroscopic scales.
The density of states (DOS) is a concept used in various fields of physics, particularly in solid-state physics, statistical mechanics, and quantum mechanics. It describes the number of quantum states available to a system at a given energy level and is crucial for understanding the distribution of particles in various energy states.
Jane Endicott may refer to different people or contexts, but there is no widely known or prominent figure by that name as of my last update in October 2023.
Detailed balance is a principle used in statistical mechanics and thermodynamics that describes a specific condition of equilibrium in a system. It refers to the condition whereby, for every possible transition between states of a system, the rate of transitions in one direction is balanced by the rate of transitions in the reverse direction. This ensures that, over time, the system reaches a steady-state distribution of states.
John Thomas Finch is a notable individual in certain academic or historical contexts but doesn't refer to a widely recognized public figure or concept as of my last knowledge update in October 2023.
The Earth's mantle is a thick layer of rock that lies between the Earth's crust and the outer core. It extends from approximately 30 kilometers (about 18.6 miles) beneath the Earth's surface to about 2,900 kilometers (about 1,800 miles) deep. The mantle accounts for about 84% of Earth's total volume and is composed mainly of silicate minerals rich in iron and magnesium.
The lower oceanic crust is a layer of the Earth's crust that forms part of the oceanic lithosphere. It is typically situated beneath the upper oceanic crust and lies above the mantle. The oceanic crust has a distinct layered structure, which can generally be divided into three main layers: 1. **Layer 1**: This is the sedimentary layer, consisting mainly of sediments that have settled on the ocean floor, including clay, silt, and biogenic materials like shells.
As of my last knowledge update in October 2021, "Mesoplates" may refer to various things based on context, but it is not a widely recognized term in scientific literature or common usage. It could potentially refer to a specific type of product, a niche brand, or a concept in a particular field.
Oceanic crust is the part of Earth's lithosphere that underlies the oceans. It is primarily composed of basalt, a dense volcanic rock, and is generally thinner and younger than its continental counterpart. Key characteristics of oceanic crust include: 1. **Thickness**: Oceanic crust typically ranges from about 5 to 10 kilometers (3 to 6 miles) thick, making it thinner than continental crust, which can exceed 30 kilometers (19 miles) in thickness.
The San Andreas Fault Observatory at Depth (SAFOD) is a scientific research facility established to study the San Andreas Fault, which is one of the most well-known and active tectonic boundaries in California. It was designed to investigate the processes occurring along the fault at great depths and to improve our understanding of fault mechanics, earthquake processes, and seismic hazards.
Aavasaksa does not seem to refer to any widely recognized concept, term, or entity as of my last knowledge update in October 2023. It is possible that it may pertain to a specific cultural reference, location, or concept that is not well-documented in general knowledge sources.
"Baby Blinkins" is a children's animated television series that features a group of animated baby characters who embark on various adventures. The show is known for its colorful animation and engaging storytelling, designed to entertain and educate young children. The characters often learn important lessons about friendship, sharing, and problem-solving as they navigate their playful world.
Country Yumkins is a brand or product line associated with a series of collectible toys that were aimed primarily at children. These toys are often whimsical, colorful characters that can represent various themes, such as food, animals, or other playful concepts. They tend to be part of a larger trend of collectible items that encourage kids to collect, trade, and play with them.
The Grass Mud Horse (草泥马, cǎonímǎ) is a fictional creature that became a popular meme in Chinese internet culture. It symbolizes defiance against censorship and is a satirical form of protest against the Chinese government's internet restrictions. The name "Grass Mud Horse" sounds similar to a vulgar phrase in Mandarin that translates to "f*** your mother," providing a clever way for people to express dissent without directly using offensive language.
Squirmles is a toy that became popular as a novelty item, particularly among children. It consists of a flexible, worm-like figure that can wiggle and squirm, often powered by a small motor or battery. The appealing aspect of Squirmles is their ability to move in a lifelike manner, which can be entertaining to watch and play with. They often come in a variety of colors and styles, and some variations might be designed for specific themes or characters.
Jewelpet is a multimedia franchise created by Sanrio and Sega Sammy Holdings. It was initially launched in Japan in 2008 and centers around adorable, magical creatures known as Jewelpets, which are based on various gemstones. Each Jewelpet has its own unique personality and magical powers. The franchise encompasses various forms of media, including animated television series, movies, video games, toys, and merchandise.
Pillow People refers to a brand or a line of plush toys that are designed to be comforting and huggable. These toys often have a soft, pillow-like structure and are aimed at children, serving as companions for sleep and play. They may come in various shapes, sizes, and designs, including animal and character forms, to appeal to young children.
A semipermutable subgroup is a concept in the field of group theory, particularly in the study of group extensions and solvable groups. A subgroup \( H \) of a group \( G \) is called **semipermutable** if for every normal subgroup \( N \) of \( G \) such that \( N \) is a subset of \( H \), the subgroup \( H \) permutes with \( N \) in \( G \).
In group theory, an **abnormal subgroup** is a specific type of subgroup that captures certain properties related to the structure of the group. A subgroup \( H \) of a group \( G \) is called **abnormal** if it satisfies the following condition: For every \( g \in G \), if \( gH \) (the left coset of \( H \) in \( G \)) intersects with \( H \) non-trivially (i.e.
In group theory, a **contranormal subgroup** is a type of subgroup with a particular relationship to normal subgroups and normality conditions in a larger group.

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