Gambler's ruin by Wikipedia Bot 0
Gambler's ruin is a concept from probability theory and statistics that models a gambling scenario where a gambler continues to gamble until either they lose all their money or reach a predetermined target amount. It is often used to illustrate the principles of random walks and the behavior of stochastic processes. In a typical setup, a gambler starts with a certain amount of capital and bets on a game with a fixed probability of winning or losing.
Pill puzzle by Wikipedia Bot 0
The Pill Puzzle is a logical reasoning problem often presented as a brain teaser or puzzle. It typically involves a scenario where you have a certain number of pills, some of which are good (safe to take) and some of which are bad (harmful or lethal). The challenge often centers around identifying the good pills from the bad ones using a limited number of tests or a specific set of rules. Here's a common formulation of the Pill Puzzle: - You have a number of pills, say 12.
Béla Krekó by Wikipedia Bot 0
Béla Krekó is a Hungarian political scientist and expert in the fields of foreign policy, international relations, and political psychology. He is recognized for his work on topics related to Central and Eastern Europe, nationalism, and the impact of public opinion on foreign policy decisions. Krekó may also be involved in academic research, public discourse, and policy analysis.
The Erasmus Smith's Professor of Mathematics is a prestigious academic position at Trinity College Dublin, the University of Dublin, Ireland. Established in 1752 through a bequest from Erasmus Smith, a wealthy merchant and philanthropist, the role is typically filled by a leading mathematician and involves both teaching and research responsibilities. The position is known for its contributions to mathematical sciences and its influence on mathematical education in Ireland.
Projective polyhedra are a class of geometric structures in the field of topology and geometry. More specifically, a projective polyhedron is a polyhedron that has been associated with the projective space, particularly projective 3-space. In topology, projective geometry can be understood as the study of geometric properties that are invariant under projective transformations.
John Ernst Worrell Keely (1827–1898) was an American inventor and self-proclaimed inventor of a revolutionary power generation system in the late 19th century. He is best known for his claims regarding a machine he developed, which he referred to as the "Keely motor." Keely claimed that his machine could harness a form of energy that he described as "vibrational force," and he asserted that it could produce perpetual motion.
Kauko Armas Nieminen was a Finnish fighter pilot during World War II, known for his significant contributions to the Finnish Air Force. He is often recognized for his combat achievements and skill in aerial warfare. Beyond his military service, he later became involved in aviation and played a role in the development of civil aviation in Finland. His legacy in Finnish aviation and military history remains notable.
The Coriolis effect refers to the apparent deflection of moving objects when they are viewed in a rotating reference frame, such as the Earth. This phenomenon is caused by the rotation of the Earth on its axis. In a rotating system, such as the Earth, objects moving over its surface appear to be deflected from their straight-line paths.
Bloch sphere by Wikipedia Bot 0
The Bloch sphere is a geometrical representation of the state space of a two-level quantum mechanical system, commonly referred to as a qubit. In quantum mechanics, qubits are the fundamental units of quantum information, analogous to classical bits, but they can exist in superpositions of 0 and 1 states. The Bloch sphere provides a visualization of the pure states of a qubit as points on the surface of a sphere.
Circular points at infinity are a concept from projective geometry, particularly relating to the projective plane and the study of lines and conics. In the context of projective geometry, the idea is to extend the usual Euclidean plane by adding "points at infinity," which allows us to treat parallel lines as if they meet at a point. In the case of conics, specifically circles, there are two points at infinity that are referred to as the "circular points at infinity.
Collineation by Wikipedia Bot 0
Collineation is a concept that arises in the fields of projective geometry and algebraic geometry. It refers to a type of transformation of a projective space that preserves the incidence structure of points and lines. Specifically, a collineation is a mapping between projective spaces that takes lines to lines and preserves the collinearity of points.
Hessian pair by Wikipedia Bot 0
In the context of mathematical optimization and differential geometry, the term "Hessian pair" generally refers to a specific combination of the Hessian matrix and a function that is being analyzed. The Hessian matrix, which represents the second-order partial derivatives of a scalar function, provides important information about the curvature of the function, and thus about the nature of its critical points (e.g., whether they are minima, maxima, or saddle points).
In mathematics, particularly in the context of projective geometry, the concept of a hyperplane at infinity is an important idea used to facilitate the study of geometric properties. Here's a breakdown of the concept: 1. **Projective Space**: In projective geometry, we augment the usual Euclidean space by adding "points at infinity". This allows us to handle parallel lines and other geometric relationships more conveniently.
Point-pair separation is a concept often used in various fields such as mathematics, computer science, and physics to describe the distance between a pair of points in a given space. It specifically focuses on measuring the minimum distance separating two distinct points, which can be important in applications such as spatial analysis, clustering, and geometric computations.
Point at infinity by Wikipedia Bot 0
The term "point at infinity" can refer to different concepts depending on the context, particularly in mathematics and geometry. Here are a few interpretations: 1. **Projective Geometry**: In projective geometry, points at infinity are added to the standard Euclidean space to simplify certain aspects of geometric reasoning.
Maximal arc by Wikipedia Bot 0
In the context of mathematics, particularly in topology and related fields, a "maximal arc" typically refers to a segment or a subset of a space that cannot be extended further while maintaining certain properties—often related to continuity or connectedness. The term is often associated with the study of curves or paths in metric spaces or topological spaces.
Moufang plane by Wikipedia Bot 0
The Moufang plane is a specific type of finite projective plane that arises in the context of incidence geometry and group theory. It is named after the mathematician Ruth Moufang, who studied its properties. A key characteristic of the Moufang plane is that it is constructed using a projective geometry over a division ring (or skew field), which is a generalized field where multiplication may not be commutative.
Oriented projective geometry is a branch of projective geometry that considers the additional structure of orientation. In traditional projective geometry, the focus is primarily on the properties of geometric objects that remain invariant under projective transformations, such as lines, points, and their relations. However, projective geometry itself does not inherently distinguish between different orientations of these objects. In oriented projective geometry, an explicit orientation is assigned to points and lines.
"Hyperconnected space" typically refers to an environment or concept characterized by extensive and seamless connectivity among people, devices, and systems. This term is often used in the context of the Internet of Things (IoT), smart cities, and advanced communications technologies that enable constant interaction and data exchange. Key features of a hyperconnected space include: 1. **Ubiquitous Connectivity**: Every device, object, and individual can connect to the internet and communicate with each other, regardless of location.

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