Richard K. Guy (1916–2020) was a renowned British mathematician known for his contributions to various fields of mathematics, particularly in combinatorial game theory, number theory, and combinatorial geometry. He was a professor at the University of Calgary in Canada and had a long and prolific career in mathematical research and education. Guy is perhaps best known for co-authoring the influential book "Winning Ways for Your Mathematical Plays," which discusses strategies and theories related to combinatorial games.
The Stanley–Wilf conjecture is a statement in combinatorial mathematics concerning the enumeration of permutations and, more generally, the growth of certain classes of combinatorial objects. Specifically, it deals with the growth rate of the number of permutations avoiding a given set of patterns. Formulated in 1995 by Richard P.
The Generalized Integer Gamma Distribution is a statistical distribution that extends the traditional gamma distribution to encompass integer-valued random variables. While the classic gamma distribution is defined for continuous random variables, the generalized integer gamma distribution applies similar principles, allowing for the modeling of count data. ### Key Characteristics 1. **Parameterization**: The generalized integer gamma distribution is typically characterized by shape and scale parameters, similar to the standard gamma distribution.
The Kempner function, often denoted as \( K(n) \), is a function defined in number theory that counts the number of positive integers up to \( n \) that are relatively prime to \( n \) and also which contain no digit equal to 0 when expressed in decimal notation. This function is named after mathematician Howard Kempner. More formally, the Kempner function can be defined as follows: - Let \( n \) be a positive integer.
The quantum dilogarithm is a function that emerges in the context of quantum groups and various areas of mathematical physics, particularly in the study of quantum integrable systems and representation theory. It can be viewed as a noncommutative analog of the classical dilogarithm function.
The Honeycomb Conjecture is a mathematical statement regarding the most efficient way to partition a given area using shapes, specifically focusing on the arrangement of regular hexagons. The conjecture asserts that a regular hexagonal grid provides the most efficient way to divide a plane into regions of equal area with the least perimeter compared to any other shape.
The Moving Sofa Problem is a classic problem in geometry and mathematical optimization. It involves determining the largest area of a two-dimensional shape (or "sofa") that can be maneuvered around a right-angled corner in a corridor. Specifically, the problem asks for the maximum area of a shape that can be moved around a 90-degree turn in a hallway, where the width of the hallway is fixed.
Gérard Iooss is a French mathematician known for his work in the field of fluid mechanics and applied mathematics. He has made significant contributions, particularly in the areas of dynamical systems and bifurcation theory. Over the years, he has published numerous research papers and articles, advancing the understanding of complex phenomena in various scientific fields.
Wenxian Shen is not widely recognized in popular literature or mainstream discussions as of my last knowledge update in October 2021.
Yves Benoist is a French entrepreneur known for his contributions to the technology and software development sectors. He has been involved in various initiatives aimed at promoting innovation and entrepreneurship in France and beyond. Beyond that, there may be other individuals or references associated with the name, but without additional context, it's difficult to pinpoint the specific Yves Benoist you might be inquiring about.
A magnetic sail, often referred to as a "magnetohydrodynamic sail" or simply "mag sail," is a proposed spacecraft propulsion system that uses magnetic fields to interact with the solar wind—the stream of charged particles emitted by the Sun. This concept leverages the principles of electromagnetism to provide thrust, allowing spacecraft to travel through space without relying solely on conventional propellants.
The Stewart–Tolman effect, named after physicists Harold Stewart and Richard C. Tolman, refers to an interesting phenomenon in thermodynamics and statistical mechanics, particularly in the context of systems with gravitational fields. In essence, the Stewart–Tolman effect describes how the temperature of a gas in a gravitational field can vary with height. More specifically, it suggests that in a stationary gravitational field, the temperature of a gas decreases as one moves upwards in the gravitational field.
Entropy Network refers to a decentralized blockchain protocol that is often designed to enhance data management and privacy in various applications. It aims to harness the concept of entropy, which in information theory represents the degree of disorder or randomness, to improve data storage, retrieval, and security. Key features and aspects often associated with Entropy Network include: 1. **Decentralization**: Utilizing blockchain technology, it aims to distribute data across multiple nodes to enhance security and reduce reliance on a single central authority.
Quantum thermodynamics is a field of study that blends the principles of quantum mechanics with thermodynamics. It aims to understand and describe the thermodynamic properties and behaviors of systems at the quantum scale, where classical thermodynamic laws may not apply as expected. Here are some key aspects of quantum thermodynamics: 1. **Quantum States and Processes**: In contrast to classical thermodynamics, which typically deals with macroscopic systems and bulk properties, quantum thermodynamics focuses on the behavior of individual quantum systems.
Boyle temperature is a concept in thermodynamics that refers to a specific temperature at which a real gas behaves like an ideal gas, regardless of its pressure. This temperature is significant because, for real gases, deviations from ideal gas behavior typically occur at high pressures and low temperatures. At the Boyle temperature, the interactions between gas molecules are minimized, making the gas's behavior more closely resemble that of an ideal gas, which follows Boyle's law (PV = constant) without deviations.
An immersion chiller is a device used primarily in brewing and cooking to quickly cool down liquids, especially after boiling. It consists of a coiled copper or stainless steel tube through which cold water flows. The coil is submerged directly into the hot liquid (such as wort in beer brewing or soup stock) right after it has been heated. Here's how it works: 1. **Setup**: The immersion chiller is placed into the hot liquid.
Backdraft refers to a fire phenomenon that occurs when oxygen is suddenly introduced into an environment that has been deprived of it due to combustion. This can happen, for example, when a door is opened to a room with a fire that has consumed most of the available oxygen. As the oxygen rushes in, it can lead to a rapid and explosive combustion of gases that have accumulated, resulting in a dangerous flare-up or explosion.
Lattice Boltzmann methods (LBM) are typically known for their applications in fluid dynamics, but they can also be adapted to study solid mechanics, particularly in the realm of modeling the behavior of materials and structures. The Lattice Boltzmann method is a computational technique that simulates fluid flow using a discretization of the Boltzmann equation, which describes the statistical behavior of a thermodynamic system out of equilibrium.
A spherical angle is a type of angle defined on the surface of a sphere. It is formed by two intersecting arcs of great circles, which are the largest possible circles that can be drawn on a sphere and whose centers coincide with the center of the sphere. Spherical angles are measured in steradians or degrees, similar to planar angles, but they account for the curvature of the sphere.
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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
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. - Infinitely deep tables of contents:
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





