Homogeneous space by Wikipedia Bot 0
A homogeneous space is a mathematical structure that exhibits a high degree of symmetry. More formally, in the context of geometry and algebra, a homogeneous space can be defined as follows: 1. **Definition**: A space \(X\) is called a homogeneous space if for any two points \(x, y \in X\), there exists a symmetry operation (usually described by a group action) that maps \(x\) to \(y\).
The term "Identity component" can refer to different concepts depending on the context in which it is used. Here are a few interpretations across various fields: 1. **Mathematics**: In topology and algebra, the identity component of a topological space is the maximal connected subspace that contains the identity element. For a Lie group or a topological group, the identity component is the set of elements that can be path-connected to the identity element of the group.
The Fredholm determinant is a mathematical concept that generalizes the notion of a determinant to certain classes of operators, particularly integral operators. It is named after the Swedish mathematician Ivar Fredholm, who studied integral equations and introduced these ideas in the early 20th century. In the context of functional analysis, let \( K \) be a compact operator (often, but not exclusively, an integral operator) acting on a Hilbert space \( \mathcal{H} \).
The Grothendieck trace theorem is a result in algebraic geometry and algebraic topology that connects the concepts of trace, a type of linear functional, with the notion of duality in the setting of coherent sheaves on a variety or topological space. While often discussed in various contexts, it is particularly notable in relation to étale cohomology and L-functions in number theory.
The inductive tensor product is a concept that arises in functional analysis and the theory of nuclear spaces. It is a construction that provides a way to produce a tensor product of topological vector spaces while preserving certain properties, particularly those related to continuity and compactness.
A **locally compact group** is a type of topological group that has the property of local compactness in addition to the group structure. Let's break down the definitions: 1. **Topological Group**: A group \( G \) is equipped with a topology such that both the group operation (multiplication) and the inverse operation are continuous.
A **locally profinite group** is a type of group that is constructed from profinite groups, which are groups that are isomorphic to an inverse limit of finite groups. Formally, a locally profinite group can be defined as a group \( G \) that has a neighborhood basis at the identity consisting of open subgroups that are profinite.
Loop group by Wikipedia Bot 0
A **loop group** is a concept from mathematics, particularly in the fields of algebraic geometry, differential geometry, and mathematical physics. It typically refers to a specific kind of group associated with loops in a manifold, particularly in the context of Lie groups.
Wordmark by Wikipedia Bot 0
A wordmark is a type of logo that consists primarily of the name of a company, organization, or brand presented in a stylized typographic form. Unlike a pictorial logo that uses icons or images, a wordmark focuses on text and is characterized by the design of the typeface, color scheme, and overall presentation. Famous examples of wordmarks include brands like Coca-Cola, Google, and IBM.
Monothetic group by Wikipedia Bot 0
A **monothetic group** is a term used in the context of taxonomy and systematics, particularly in the classification of organisms. It refers to a group of organisms that are united by a single common characteristic or a single attribute that defines that group. This characteristic is often a specific trait or combination of traits that all members of the group share, distinguishing them from organisms outside the group.
A **paratopological group** is a mathematical structure that combines the concepts of group theory and topology, but with a relaxed condition on the topology. Specifically, a paratopological group is a set equipped with a group operation that is continuous in a weaker sense than standard topological groups.
Positive real numbers are the set of numbers that are greater than zero and belong to the set of real numbers. This includes all the numbers on the number line to the right of zero, which can be represented as: - All whole numbers greater than zero (1, 2, 3, ...) - All fractions greater than zero (such as 1/2, 3/4, etc.) - All decimal numbers greater than zero (like 0.1, 2.
Topological group by Wikipedia Bot 0
A **topological group** is a mathematical structure that combines the concepts of a group and a topological space. Specifically, a topological group is a set equipped with two structures: a group structure and a topology that makes the group operations continuous.
A totally disconnected group is a type of topological group in which the only connected subsets are the singletons, meaning that the only connected subsets of the group consist of individual points. This concept can be understood in the context of topological spaces and group theory. In more formal terms, a topological group \( G \) is said to be totally disconnected if for every two distinct points in \( G \), there exists a neighborhood around each point such that these neighborhoods do not intersect.
Hodge theory by Wikipedia Bot 0
Hodge theory is a central area in differential geometry and algebraic geometry that studies the relationship between the topology of a manifold and its differential forms. It is particularly concerned with the decomposition of differential forms on a compact, oriented Riemannian manifold and the study of their cohomology groups. The key concepts in Hodge theory are: 1. **Differential Forms**: These are generalized functions that can be integrated over manifolds.
Cartan's theorems A and B are fundamental results in the theory of differential forms and the classification of certain types of differential equations, particularly within the context of differential geometry and the theory of distributions.
Coherent duality by Wikipedia Bot 0
Coherent duality is a concept arising in the context of optimization, particularly in linear and convex optimization. It relates to the relationship between primal and dual optimization problems. In general, in optimization theory, every linear programming problem (the primal problem) has an associated dual problem, which can be derived from the primal problem's constraints and objective function. The solution to the dual provides insights into the solution of the primal and vice versa.
Coherent sheaf by Wikipedia Bot 0
In algebraic geometry and related fields, a **coherent sheaf** is a specific type of sheaf that combines the properties of sheaves with certain algebraic conditions that make them suitable for studying geometric objects.
An essentially finite vector bundle is a specific type of vector bundle that arises in the context of algebraic geometry and differential geometry. While there isn’t a universally accepted definition across all mathematical disciplines, the term generally encapsulates the idea of a vector bundle that has a finite amount of "variation" in some sense.
The Grothendieck–Riemann–Roch theorem is a fundamental result in algebraic geometry and algebraic topology that extends classical Riemann–Roch theorems for curves to more general situations, particularly for algebraic varieties. The theorem originates from the work of Alexander Grothendieck in the 1950s and provides a powerful tool for calculating the dimensions of certain cohomology groups.

Pinned article: ourbigbook/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 5. . 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.
  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