Vitale's random Brunn–Minkowski inequality is a result in the field of geometric probability, particularly in the study of random convex bodies. It generalizes the classical Brunn–Minkowski inequality, which is a fundamental result in the theory of convex sets in Euclidean space, relating the volume of convex bodies to the volumes of their convex combinations.
P-boxes (probability boxes) and probability bounds analysis are powerful tools in the field of uncertainty quantification and risk assessment. They provide a systematic way to characterize and handle uncertainties in various applications, particularly when precise probability distributions are difficult to obtain.
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.
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.
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.
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.
Invertebrate drift refers to the process in which aquatic invertebrates, such as insects, crustaceans, and other small organisms, are carried downstream by the flow of water in rivers and streams. This phenomenon occurs when invertebrates detach from their substrates—such as rocks, sediment, or vegetation—and are swept away by the current.
The Macaronesian Biogeographic Region is a distinct biogeographic area located in the North Atlantic Ocean. It comprises several archipelagos known for their unique ecosystems and biodiversity. The primary components of the Macaronesian region include: 1. **Azores**: An archipelago belonging to Portugal, located about 1,500 kilometers west of the mainland. The islands are known for their volcanic origin and diverse flora and fauna.
Marine biogeochemical cycles refer to the processes that involve the transformation and movement of chemical elements and compounds in marine environments, including oceans, seas, and coastal regions. These cycles are crucial for understanding how life functions in the marine ecosystem, how energy is transferred between living organisms, and how nutrients and chemicals are recycled. There are several key components to marine biogeochemical cycles: 1. **Elements and Compounds**: The primary elements involved include carbon, nitrogen, phosphorus, sulfur, and others.
Panbiogeography is a biogeographical approach that focuses on the distribution of organisms across space and emphasizes the historical and spatial relationships between different biotas. Developed primarily by the biogeographer Peter W. F. D. Craw, panbiogeography seeks to understand how the geographic distribution of species is influenced by historical events, such as continental drift, glaciation, and other forms of environmental change.
Papuasia is a term used to refer to a region that encompasses the island of New Guinea and its surrounding islands, which includes the western part of New Guinea (Irian Jaya or Papua), and often extends to adjacent island groups such as the Solomon Islands, Vanuatu, and occasionally parts of the eastern coast of Indonesia. The term reflects the cultural, linguistic, and ecological characteristics of this area, which is known for its rich biodiversity and diverse indigenous cultures.
In biology, a "relict" refers to a species, population, or ecosystem that has survived from an earlier geological or evolutionary period and has largely remained unchanged despite significant changes in the environment or the ecosystem surrounding it. Relicts are often remnants of a once more widespread group and may reflect ancient lineages that have persisted through time. Relict species can often be found in isolated areas, such as mountain ranges, islands, or specific habitats that have remained relatively undisturbed.
Spatial ecology is a subfield of ecology that focuses on the spatial distribution of organisms, populations, and communities in relation to their environment. It examines how spatial patterns and processes influence ecological interactions, species distribution, community structure, and ecosystem function. Key concepts in spatial ecology include: 1. **Habitat Fragmentation**: Understanding how the division of habitats affects species diversity and distribution.
Sundaland is a biogeographical region in Southeast Asia that includes the Malay Peninsula, the Java Sea, Borneo, Sumatra, and surrounding islands. It is characterized by its rich biodiversity and unique ecosystems, which have developed due to its geological history and climate. Sundaland was once part of a larger landmass during periods of low sea level, particularly during the last Ice Age, allowing species to migrate freely between the islands and the Asian mainland.
Windwatt is a term that can refer to a specific product or brand related to wind energy, typically involving technology designed for wind power generation. It may include wind turbines, energy management systems, or other renewable energy solutions focused on harnessing wind energy. However, without further context, it’s difficult to provide a precise definition, as terms like "Windwatt" can have varying meanings depending on the specific industry or application.
The World Register of Marine Species (WoRMS) is an authoritative and comprehensive database that aims to provide valid scientific names and classification information for marine organisms. It was established to facilitate the study of marine biodiversity by offering a reliable resource for researchers, policymakers, and educators interested in marine species. Key features of WoRMS include: 1. **Taxonomic Information**: WoRMS provides taxonomic details for marine species, including synonyms, geographic distribution, and ecological information.
Zoogeography is a branch of biogeography that deals with the study of the geographical distribution of animal species and populations across the planet. It involves understanding how historical, ecological, and environmental factors influence the presence and diversity of animal life in different regions. Key areas of focus in zoogeography include: 1. **Species Distribution**: Investigating where different animal species are found and how their distributions are influenced by factors such as climate, geography, and habitat availability.
Eratosthenes Seamount is an underwater mountain located in the eastern Mediterranean Sea, off the coast of Cyprus. It is named after the ancient Greek mathematician and astronomer Eratosthenes, who is known for calculating the Earth's circumference. The seamount is part of the Eratosthenes Plateau, which is a large geological structure characterized by its complex geological history and unique bathymetry.
In oceanography, a "front" refers to a boundary or transition zone between two different water masses that have distinct physical properties, such as temperature, salinity, or density. These differences can lead to variations in water characteristics and can significantly influence marine ecosystems, weather patterns, and ocean circulation. There are several types of fronts in oceanography: 1. **Temperature Fronts**: These occur where there is a sharp change in water temperature, often associated with currents or upwelling zones.

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