The Arithmetic-Geometric Mean (AGM) is a mathematical concept that combines the arithmetic mean and the geometric mean of two non-negative real numbers. The AGM of two numbers \( a \) and \( b \) is found through an iterative process. Here's how it works: 1. **Start with two numbers**: Let \( a_0 = a \) and \( b_0 = b \).
The geometric-harmonic mean is a type of mean that combines features of both the geometric mean and the harmonic mean. Specifically, it is the mean of two numbers calculated through a two-step process involving these two types of means. 1. **Geometric Mean (GM)**: For two positive numbers \( a \) and \( b \), the geometric mean is given by: \[ GM = \sqrt{ab} \] 2.
A **medoid** is a representative value or object in a dataset, often used in cluster analysis. Unlike the mean or centroid (which is the average of all points in a cluster), the medoid is the actual data point that minimizes the dissimilarity (or distance) to all other points in the cluster. In other words, the medoid is the point that has the smallest sum of distances to all other points in the same cluster.
Émile Borel (1871–1956) was a French mathematician known for his significant contributions to various areas of mathematics, particularly in measure theory, set theory, and probability. He is one of the founders of modern probability theory and is widely recognized for introducing the concept of Borel sets, which are the basis for the study of measure and integration in mathematical analysis.
Integrated Flux Nebula (IFN) refers to a type of diffuse interstellar matter that is found in the Milky Way galaxy. Unlike typical nebulae, which may consist of concentrated clouds of gas and dust, the Integrated Flux Nebula is composed of more diffuse, low-density material that scatters starlight, making it faintly visible against the background of the night sky. IFN is typically associated with the light from nearby stars, particularly those that are part of our galaxy.
Robert Phelps could refer to multiple individuals, but he is best known as an American biochemist and Nobel Prize laureate in physiology or medicine, awarded in 2006 for his work on the body's sensory mechanisms, particularly the discovery of receptors for temperature and touch. Phelps has made significant contributions to our understanding of how the nervous system processes sensory information.
Budgie Toys is a retailer that specializes in offering a wide range of toys and products for children. They provide an array of items, including educational toys, games, and crafts, designed to stimulate creativity and support development in young children. Budgie Toys often focuses on quality and safety, ensuring that the products are suitable for kids of various ages.
The Cartan–Hadamard conjecture is a statement in differential geometry regarding the behavior of geodesics on Riemannian manifolds. Specifically, it deals with the topology of simply connected, complete Riemannian manifolds with non-positive sectional curvature. The conjecture asserts that if a Riemannian manifold \( M \) is simply connected and complete, and if its sectional curvature is non-positive throughout, then the manifold is contractible.
Clarkson's inequalities are a set of mathematical inequalities that relate to norms in functional spaces, particularly in the context of \( L^p \) spaces. They describe how the \( L^p \) norm of sums of functions behaves in relation to the norms of the individual functions.
Convergence in measure is a concept from measure theory, which is a branch of mathematics dealing with the formalization of notions like size, length, and area. It is particularly important in the study of sequences of measurable functions.
Convergence of measures is a concept in measure theory, a branch of mathematics that deals with the study of measures, integration, and probability. Specifically, it addresses how sequences of measures behave as they converge to a limit.
Consumer credit risk refers to the risk that a borrower will default on their loan obligations, failing to make required payments on time or at all. This risk is particularly relevant for lenders and financial institutions that offer credit products to consumers, such as personal loans, credit cards, mortgages, and auto loans.
In the context of measure theory and functional analysis, a Nikodym set refers to a specific type of set that is associated with Radon measures. It is linked to the concept of the Radon-Nikodym theorem, which provides conditions under which a measure can be represented as the integral of a function with respect to another measure.
In set theory and measure theory, a non-measurable set is a subset of a given space (typically, the real numbers) that cannot be assigned a Lebesgue measure in a consistent way. The concept of measurability is crucial in mathematics, particularly in analysis and probability theory, as it allows for the generalization of notions like length, area, and volume. The existence of non-measurable sets is typically demonstrated using the Axiom of Choice.
A Radonifying function is a type of function defined in the context of functional analysis and measure theory, especially relating to the study of measures, integration, and probability.
In group theory, the term "diameter" typically refers to a concept related to the structure of groups, particularly in the context of metric spaces and the study of their properties.
Mechanical engineering award winners typically refer to individuals or teams recognized for their outstanding contributions and achievements in the field of mechanical engineering. These awards can be presented by professional organizations, universities, industry groups, or other bodies that promote excellence in engineering. Some notable awards in the field include: 1. **ASME Awards**: The American Society of Mechanical Engineers (ASME) presents various awards for achievements in mechanical engineering, including the ASME Medal, the Distinguished Service Award, and more.
Geniac is a platform designed to help individuals and businesses manage their finances and budgets more effectively. It typically provides tools for budgeting, tracking expenses, and forecasting financial needs in order to help users make informed financial decisions. Geniac might also offer features such as goal setting, financial education resources, and analytics to enhance financial planning.
A mechanical computer is a device designed to perform calculations and process information using mechanical components, rather than electronic or digital systems. These types of computers typically utilize gears, levers, wheels, and other mechanical systems to execute mathematical operations and solve problems. ### Key Features of Mechanical Computers: 1. **Components**: Mechanical computers often consist of physical parts such as gears, levers, and other mechanical linkages. They rely on the principles of mechanics to carry out computations.
Frank Stephen Baldwin was an American inventor and engineer known for his contributions to the development of various technologies, particularly in the field of firearms and machinery. He is most notable for his work in the late 19th century and early 20th century, during which he patented several inventions related to firearms mechanisms and automatic devices.

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