The parallelogram of forces is a graphical method used to determine the resultant of two forces acting at a point. It is based on the principle of vector addition. According to this principle, two vectors can be represented as the two adjacent sides of a parallelogram, and the resultant of these two vectors can be represented by the diagonal of the parallelogram that starts from the same point.
Two-dimensional Yang–Mills theory is a gauge theory that generalizes the concept of Yang–Mills theories to two spatial dimensions. In general, Yang–Mills theories are constructed from a gauge field that transforms under a symmetry group (the gauge group), and they play a crucial role in modern theoretical physics, particularly in quantum field theory and the Standard Model of particle physics.
The Jupiter trojans are a group of asteroids that share Jupiter's orbit around the Sun, located at the L4 and L5 Lagrange points, which are approximately 60 degrees ahead of and behind Jupiter in its orbit. The ones denoted as part of the "Greek camp" typically refer to those that are positioned at the L4 point.
The list of minor planets numbered 168001 to 169000 includes a range of asteroids and other small celestial bodies that have been assigned numbers by the Minor Planet Center. Each of these minor planets has its own unique characteristics, orbits, and sometimes names. The list typically includes details such as their designation numbers, discovery dates, and names (if applicable).
The list of minor planets numbered from 175001 to 176000 includes a collection of small celestial bodies that orbit the Sun. These minor planets, often referred to as asteroids, have been assigned numbers by the International Astronomical Union (IAU) as they are discovered.
The list of minor planets numbered between 202001 and 203000 includes a wide range of asteroids and other small celestial bodies that have been assigned a number by the Minor Planet Center. These minor planets can vary in size, composition, and orbit characteristics, and they come from various regions of the solar system, including the asteroid belt and beyond.
Isomorphism theorems are fundamental results in abstract algebra that relate the structure of groups, rings, or other algebraic objects via homomorphisms. These theorems provide insight into how substructures correspond to quotient structures and how these correspondences reveal important properties of the algebraic system. The most well-known isomorphism theorems apply to groups, but similar ideas can be extended to rings and modules.
In mathematics, particularly in the field of category theory, a **morphism** is a structure-preserving map between two objects in a category. The concept of a morphism helps to generalize mathematical concepts by focusing on the relationships and transformations between objects rather than just the objects themselves. A morphism typically has the following characteristics: 1. **Objects**: In a category, you have objects which can be anything: sets, topological spaces, vector spaces, etc.
The list of minor planets numbered between 246001 and 247000 includes a selection of asteroids that have been identified and cataloged by astronomers. Each minor planet is assigned a number upon discovery, and many of these asteroids are given names based on various themes, such as mythology, cultural references, or notable individuals.
The "List of minor planets: 249001–250000" refers to a catalog of minor planets (asteroids) that have been assigned numbers between 249001 and 250000. These are part of the larger list of minor planets that have been observed and numbered by astronomers, primarily managed by the International Astronomical Union (IAU). Each minor planet is given a unique number once it is confirmed, and many of them also receive names.
The list of minor planets from 254001 to 255000 includes numerous small celestial bodies that are primarily located in the asteroid belt between Mars and Jupiter. Each minor planet in this range has a unique designation number.
The list of minor planets numbered from 284001 to 285000 includes a variety of small celestial bodies, primarily asteroids, that orbit the Sun. Each of these objects has been assigned a unique number, a name (if applicable), and other specific characteristics like their orbital details and physical parameters.
In the context of algebra, particularly in group theory and ring theory, a **normal morphism** usually refers to a mapping that preserves the structure of a mathematical object in a way that is consistent with certain normality conditions. However, the term "normal morphism" is not standard, and its meaning can vary depending on the specific algebraic structure being discussed.
The list of minor planets from 432001 to 433000 includes various small celestial bodies orbiting the Sun, typically referred to as asteroids. Each of these minor planets is designated with a unique numerical identifier.
The "List of named minor planets: R" includes minor planets (also known as asteroids) that have been assigned names starting with the letter "R." These minor planets are typically numbered when they are discovered, and as a result, they are often referred to by their number as well as their name. The list may include a variety of minor planets, ranging from those in the inner asteroid belt to those that are more distant.
The projected death tolls from nuclear attacks on cities can vary widely based on numerous factors, such as the size of the bomb, the population density of the target area, the time of day the attack occurs, and the preparedness of the city and its emergency response systems.
Holyhedron is a term that refers to a fictional polyhedron, often related to discussions in spirituality, philosophy, or alternative belief systems. It's not a standard geometric term and doesn't have a widely recognized definition in mathematics. Nonetheless, it may be used in specific contexts, such as art, literature, or certain metaphysical practices, to symbolize harmony, balance, or a connection to the divine.
The Hawaiian–Emperor seamount chain is a series of volcanoes and seamounts that extends from the Hawaiian Islands northwestward to the Aleutian Trench, showcasing some of the most active and well-studied volcanoes in the world. Here’s a list of the main volcanoes within this chain: ### Hawaiian Islands 1.
In the context of topology and geometric structures, a **locally catenative sequence** typically deals with properties related to certain types of convergence and spatial arrangements. However, the term is not widely recognized and might not have a specific standardized definition in general mathematical literature.
Louis Bertrand Castel (1688–1757) was a French priest, mathematician, and philosopher known for his notable contributions to the fields of optics and the theory of colors. He is often recognized for his work on the "Attraction of Clairaut," which dealt with the physical properties of color perception and the relationships between light and color.

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