There are many fictional characters across various media who can teleport. Here are some notable examples: 1. **Nightcrawler (Kurt Wagner)** - A mutant from Marvel Comics, Nightcrawler has the ability to teleport short distances, often leaving behind a cloud of smoke. 2. **Blink (Clarice Ferguson)** - Another mutant from Marvel Comics, she can create teleportation portals and has been a member of various superhero teams.
A formally real field is a type of field in mathematics that adheres to certain properties regarding sums of squares. Specifically, a field \( K \) is said to be formally real if it does not contain any non-negative elements that cannot be expressed as a sum of squares of elements from \( K \).
The Fundamental Theorem of Algebra states that every non-constant polynomial equation of degree \( n \) with complex coefficients has exactly \( n \) roots in the complex number system, counting multiplicities.
In mathematics, specifically in algebra, a "ground field" (often simply referred to as a "field") is a basic field that serves as the foundational set of scalars for vector spaces and algebraic structures.
Nagata's conjecture is a statement in the field of algebraic geometry, particularly concerning algebraic varieties in projective space. Specifically, it pertains to the relationships between the dimensions of varieties and the degrees of their defining equations.
The Jacobson–Bourbaki theorem is a result in the field of algebra, specifically in the theory of rings and algebras. It provides a characterization of the Jacobson radical of a ring in terms of the ideal structure of that ring. The theorem can be stated as follows: Let \( R \) be a commutative ring with unity, and let \( \mathfrak{m} \) be a maximal ideal of \( R \).
A number field is a finite degree extension of the field of rational numbers \(\mathbb{Q}\). The class number of a number field is an important invariant that measures the failure of unique factorization in its ring of integers. A number field with class number one has unique factorization, which is a desirable property in algebraic number theory.
A *perfect field* is a specific type of field in abstract algebra that has certain desirable properties, particularly in relation to algebraic extensions and the behavior of polynomials.
Bandwidth Guaranteed Polling (BGP) is a network management technique used primarily in the context of real-time communications and quality of service (QoS) applications. It is often utilized in scenarios involving time-sensitive data, such as voice over IP (VoIP) or video streaming, where maintaining a certain level of performance is crucial.
The term "Pythagorean number" commonly refers to the values (typically integers) that can be the lengths of the sides of a right triangle when following the Pythagorean theorem. The theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.
Clarecraft is a company known for producing collectible figurines, particularly those related to the fantasy genre, including characters, creatures, and scenes inspired by role-playing games like Dungeons & Dragons and similar themes. Founded in the 1980s in the United Kingdom, Clarecraft gained a reputation for its high-quality craftsmanship and attention to detail in the design of its products, often catering to collectors and fans of fantasy art.
The term "Colón statue" commonly refers to a statue of Christopher Columbus, which can be found in various locations around the world. One of the most famous statues is located in Barcelona, Spain, near the waterfront at the end of La Rambla. This statue commemorates Columbus's voyage to the Americas in 1492 and symbolizes his role in the age of exploration. The statue typically depicts Columbus pointing toward the sea, signifying his voyage.
Serre's Conjecture II pertains to the field of algebraic geometry and representation theory, specifically concerning the properties of vector bundles on projective varieties. Proposed by Jean-Pierre Serre in 1955, the conjecture concerns the relationship between coherent sheaves (or vector bundles) on projective spaces and their behavior when pulled back from smaller-dimensional projective spaces.
In the context of mathematics, particularly in algebraic geometry and the study of schemes, the term "thin set" often refers to a certain type of subset of a geometric object that meets specific criteria. However, "Thin set (Serre)" specifically relates to Serre's conjecture (or the Serre's criterion) in the context of schemes.
A universal quadratic form is a specific type of quadratic form that has the property of representing all possible integers through its integer values. In other words, a quadratic form is called "universal" if it can represent every integer as a value of the form \( ax^2 + bxy + cy^2 \) (for integer coefficients \(a\), \(b\), and \(c\)) for appropriate integer inputs \(x\) and \(y\).
Simplex numbers, in the context of higher mathematics, typically refer to a generalization of numbers that are used to describe geometric structures known as simplices. A simplex is a generalization of a triangle or tetrahedron to arbitrary dimensions. 1. **Geometric Definition**: - A 0-simplex is a point. - A 1-simplex is a line segment connecting two points. - A 2-simplex is a triangle defined by three points (vertices).
A centered cube number is a specific type of figurate number that represents a three-dimensional cube with a center cube and additional layers of smaller cubes surrounding it. Specifically, the \( n \)-th centered cube number can be calculated using the formula: \[ C_n = n^3 + (n-1)^3 \] where \( C_n \) represents the \( n \)-th centered cube number and \( n \) is a positive integer.
"Descartes on Polyhedra" typically refers to René Descartes' work in which he explored the geometry of polyhedra, particularly his insights into their properties and relationships. One of the most notable contributions from Descartes in this area is his formulation of the relationship among the vertices, edges, and faces of polyhedra, which is encapsulated in what is now known as Euler's formula.
A dodecahedral number is a figurate number that represents a dodecahedron, a three-dimensional solid that has 12 flat faces, each of which is a regular pentagon.
A heptagonal number is a figurate number that represents a heptagon (a seven-sided polygon). The formula for the \(n\)-th heptagonal number \(H_n\) is given by: \[ H_n = \frac{n(5n - 3)}{2} \] where \(n\) is a positive integer.

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