Light dark matter refers to a class of hypothetical dark matter candidates that have a relatively low mass compared to traditional dark matter models like Weakly Interacting Massive Particles (WIMPs). While WIMPs are typically on the scale of hundreds of GeV (giga-electronvolts), light dark matter candidates can have masses that are much smaller, often in the range of a few MeV (mega-electronvolts) to a few GeV.
The Runge-Gross theorem is a fundamental result in the field of many-body quantum mechanics, specifically in the context of time-dependent density functional theory (TDDFT). It establishes a mathematical connection between the time-dependent electron density of a system and the external potential acting on it.
A Homogeneously Suslin set refers to a specific type of subset of a Polish space (a separable completely metrizable topological space), particularly in the context of descriptive set theory. The notion is related to the concepts of Suslin sets and the general theory of analytic sets. A subset of a Polish space is called a Suslin set if it can be obtained from Borel sets through a continuous image or by countable unions and intersections.
Differential algebraic geometry is a field of mathematics that combines concepts from differential geometry and algebraic geometry. Specifically, it studies sets of algebraic equations and inequalities that define geometric objects and incorporates differentiability conditions. Here are some of the key components and concepts related to differential algebraic geometry: 1. **Algebraic Geometry**: This branch of mathematics focuses on the study of geometric properties of solutions to polynomial equations.
"Software wars" generally refers to the competitive landscape and conflicts among software companies, technologies, or platforms in various sectors of the tech industry. This term can apply to several contexts: 1. **Operating Systems**: The competition between major operating systems like Microsoft Windows, macOS, and various distributions of Linux can be described as software wars, as each system strives for market dominance and user preference. 2. **Application Software**: Various applications compete for user attention and market share.
Birch's theorem, also known as the Birch and Swinnerton-Dyer conjecture, is a famous conjecture in number theory related to elliptic curves. It posits a deep relationship between the number of rational points on an elliptic curve and the behavior of an associated L-function.
Wooden dolls are handcrafted toys made primarily from wood and are often used as playthings for children or as decorative items. These dolls can vary widely in design, size, and purpose, but they typically feature articulated limbs and painted or carved facial features. Historically, wooden dolls have been made in various cultures around the world, often reflecting local traditions, attire, and craftsmanship. In addition to being toys, they have sometimes served as cultural artifacts, educational tools, or collector's items.
Egli-Figuren, often referred to in English as "Egli figures" or "Egli curves," are a type of geometric figure used primarily in descriptive geometry and engineering drawing. They are named after Swiss architect and artist Hans Egli, who developed a method for representing three-dimensional forms in two-dimensional drawings. Egli figures serve to depict the spatial relationship between different components or systems, making complex structures easier to understand and visualize.
The Differential Doppler Effect refers to the variation in the frequency (or wavelength) of waves emitted by a source that is moving relative to an observer, when there are multiple sources or multiple observers involved. This effect is particularly significant in scenarios where there are changes in velocity or direction between different sources or observers. The basic concept of the Doppler Effect describes how the observed frequency changes in relation to the relative motion between a source of waves (such as sound or light) and an observer.
Laser Doppler imaging (LDI) is a non-invasive diagnostic technique used to measure and visualize blood flow in tissues. It leverages the Doppler effect, which is the change in frequency or wavelength of light (or sound) in relation to an observer moving relative to the source of the waves. In the context of LDI, a laser beam is directed at the tissue of interest.
"Ned Nefer" and "Teagan" appear to be specific characters or symbols that may relate to a particular context, such as literature, gaming, or popular media. However, as of my last knowledge update in October 2023, there is no widely recognized information on "Ned Nefer" and "Teagan.
COCOA, which stands for "Collaborative and Cooperative Open Access," is not a widely recognized term specifically within digital humanities, and its usage may vary in different contexts. However, it suggests a framework or model focusing on collaboration and open access in academic and research projects, particularly in the digital humanities.
Ancient Greek philosophy of language encompasses various views and theories about the nature, function, and meaning of language as discussed by ancient philosophers. Key figures in this area include Socrates, Plato, and Aristotle, each of whom contributed to the understanding of language in different ways. 1. **Socrates**: Although Socrates did not write down his teachings, his approach to language is conveyed through the dialogues of Plato. Socrates emphasized the importance of definitions in understanding concepts and truth.
András P. Huhn is a professional known for his work in the field of computer science, specifically in areas like machine learning, data science, and artificial intelligence. He has been involved in research and development, and his work may encompass various aspects of technology and innovation in these fields.
"Dutch women physicists" refers to female physicists from the Netherlands, who may contribute significantly to various fields within physics, including theoretical physics, experimental physics, and applied physics. Like many countries, the Netherlands has its share of prominent women in physics, including researchers, educators, and leaders in academia and industry. Historically, women in physics faced significant challenges in gaining recognition and opportunities, but many have made substantial contributions to the field.
Freek J. Beekman is not a widely recognized figure as of my last update in October 2023, so specific information about him may not be readily available. It is possible that he could be a person involved in academia, research, or a specialized field, but I would need more context to provide accurate information.
Dmitry Dolgopyat is a Russian-born Israeli gymnast known for his expertise in men's artistic gymnastics. He has competed at various international levels, including the Olympics. Dolgopyat gained significant recognition for his performances in events such as the floor exercise and vault. Notably, he won a gold medal in the floor exercise at the Tokyo 2020 Olympics (held in 2021 due to the COVID-19 pandemic).

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