The linear span (or simply span) of a set of vectors is a fundamental concept in linear algebra.
The Generalized Dihedral Group, often denoted \( \text{GD}(n) \) or \( D_n^* \), is a group that generalizes the properties of the traditional dihedral group. The dihedral group \( D_n \) is the group of symmetries of a regular polygon with \( n \) sides, and it includes both rotations and reflections. It has the order \( 2n \) (i.e.
A *setoid* is a mathematical structure that extends the concept of a set in order to incorporate an equivalence relation. Specifically, a setoid consists of a set equipped with an equivalence relation that allows you to identify certain elements as "equal" in a way that goes beyond mere identity. Formally, a setoid can be defined as a pair \((A, \sim)\), where: - \(A\) is a set.
The multiplicative inverse of a number \( x \) is another number, often denoted as \( \frac{1}{x} \) or \( x^{-1} \), such that when you multiply the two numbers together, the result is 1.
The term "normal element" can refer to different concepts depending on the context in which it's used. Here are a couple of common interpretations: 1. **In Mathematics (Group Theory)**: A normal element typically refers to an element of a group that is in a normal subgroup.
Operad algebra is a concept in the field of algebraic topology and category theory that focuses on the study of operations and their compositions in a structured manner. An operad is a mathematical structure that encapsulates the notion of multi-ary operations, where operations can take multiple inputs and produce a single output, and which can be composed in a coherent way. ### Key Components of Operads 1.
In mathematics, orthogonality is a concept that describes a relationship between vectors in a vector space. Two vectors are said to be orthogonal if their dot product is zero. This concept can be extended to various contexts in mathematics, particularly in linear algebra and functional analysis. Here are some key points regarding orthogonality: 1. **Geometric Interpretation**: In a geometric sense, orthogonal vectors are at right angles (90 degrees) to each other.
In mathematics, particularly in functional analysis and the theory of operator algebras, a **predual** refers to a Banach space that serves as the dual space of another space. Specifically, if \( X \) is a Banach space, then a space \( Y \) is said to be a predual of \( X \) if \( X \) is isometrically isomorphic to the dual space \( Y^* \) of \( Y \).
Richard Sylvan (originally Richard Routley) was an influential Australian philosopher, renowned for his work in logic, philosophy of science, and environmental ethics. He played a significant role in the development of formal logic and advocated for the importance of rigorous philosophical analysis. Sylvan was also known for his contributions to discussions on the philosophy of language and metaphysics, particularly regarding the nature of truth and reference.
Group extension is a concept in group theory, a branch of abstract algebra. It refers to the process of creating a new group from a known group by adding new elements that satisfy certain properties related to the original group. More formally, it describes a way to construct a group \( G \) that contains a normal subgroup \( N \) and a quotient group \( G/N \).
Groups of Lie type are a class of algebraic groups that can be associated with simple Lie algebras and are defined over finite fields. They play a significant role in the theory of finite groups, particularly in the classification of finite simple groups. The concept of groups of Lie type arises from the representation theory of Lie algebras over fields, especially over finite fields.
The Yoneda product is a construction in category theory that arises in the context of the Yoneda Lemma. More specifically, it is related to the notion of representing functors through the use of hom-sets and is often seen in the study of adjoint functors and natural transformations.
Mathematical objects are entities studied in the field of mathematics that can be abstractly defined, manipulated, and analyzed. These objects form the foundation of various branches of mathematics and include a wide range of concepts. Here are some key categories of mathematical objects: 1. **Numbers**: - **Real Numbers**: Include all the rational and irrational numbers. - **Integers**: Whole numbers, both positive and negative, including zero.
Conceptualism is a philosophical theory that addresses the nature of universals and their existence in relation to the objects they represent. It can be seen as a middle ground between realism and nominalism in the philosophy of language and metaphysics. 1. **Philosophical Context**: In this context, conceptualism argues that universals (like properties, characteristics, or types) exist, but only within the minds of individuals and not as independent, abstract entities.
Boyce McDaniel is not a widely recognized term or reference in popular culture, literature, or science as of my last update in October 2023. It's possible that it may refer to an individual, perhaps someone notable in a specific field or community, but there isn't readily available information on a person by that name. If you have more context or details regarding Boyce McDaniel—such as the field (e.g.
A Dielectric Wall Accelerator (DWA) is a type of particle accelerator that utilizes a dielectric material (an insulating material that can be polarized by an electric field) as part of its structure to accelerate charged particles, such as electrons or ions. The DWA operates on the principle of using high-frequency electric fields to accelerate particles in a compact setup, which can make it more efficient and easier to integrate into various applications compared to traditional accelerators.
The electron-cloud effect is a concept in quantum mechanics that describes the behavior of electrons in atoms and molecules. It refers to the idea that electrons do not occupy fixed orbits around the nucleus, as once thought (in the Bohr model of the atom), but instead exist in a "cloud" of probability. This cloud represents areas where the electrons are likely to be found at any given time.
Louvain-la-Neuve Cyclotron is a particle accelerator located in Louvain-la-Neuve, Belgium. It is primarily used for research in nuclear and particle physics, as well as for applications in medical physics, particularly in the production of radioisotopes for nuclear medicine. The cyclotron accelerates charged particles, typically protons or deuterons, to high energies and allows scientists to conduct experiments involving nuclear reactions and the study of fundamental particles.
A multipole magnet is a type of magnet that has multiple poles, which can include not just the standard north and south poles, but also higher-order poles (like quadrupoles, octupoles, etc.) that create more complex magnetic field configurations. These magnets are used in various applications, particularly in the fields of accelerator physics and magnetic confinement in fusion reactors.

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