In mathematics, oscillation refers to the behavior of a function, sequence, or series that varies or fluctuates in a regular and periodic manner. This concept can be applied in various contexts, including calculus, differential equations, and real analysis. Here are some key points related to oscillation: 1. **Definition**: A function is said to oscillate if it takes on values that repeatedly move up and down around a certain point (such as a mean or equilibrium position).
The Riesz rearrangement inequality is a fundamental result in mathematical analysis and functional analysis, particularly in the field of inequality theory. It provides a way to compare the integrals (or sums) of functions after they have been suitably rearranged.
The construction of the real numbers is a fundamental topic in mathematics, particularly in analysis and number theory. The real numbers can be constructed in several ways, each with its own philosophical emphasis and technical methods. Here are the most common approaches: ### 1. **Dedekind Cuts** The construction via Dedekind cuts involves defining real numbers in terms of partitions of the rational numbers.
A function of a real variable is a mathematical relationship that assigns to each real number \( x \) in a given set (the domain) exactly one real number \( f(x) \) in another set (the codomain or range).
The number 693 is an integer that can serve various purposes depending on context. Here are a few mathematical properties and facts about the number 693: 1. **Type**: It is a whole number and an odd number. 2. **Prime Factorization**: The prime factorization of 693 is \(3 \times 7 \times 33\) or \(3 \times 7 \times 11\).
Giovanni Plana (1781–1864) was an Italian astronomer and mathematician, known for his contributions to celestial mechanics and astronomy. He is recognized for his work on the theory of comets and planetary orbits, as well as for his role in the development of astronomical instruments. Plana also made significant contributions to the field of mathematical analysis.
The Real-time Neutron Monitor Database (RMNDB) is a scientific data repository that collects, archives, and disseminates measurements from neutron monitors located around the world. Neutron monitors are devices that measure the intensity of cosmic rays—high-energy particles from outer space that interact with the Earth's atmosphere, producing secondary particles including neutrons.
A Real-Time Locating System (RTLS) is a technology used to automatically identify and track the location of objects or individuals in real-time, typically within a defined geographical area such as a building or campus. RTLS systems employ various identifying technologies and methods to deliver precise location data, facilitating applications in several sectors including healthcare, manufacturing, logistics, and retail. Key components of an RTLS include: 1. **Tags:** Small devices attached to the objects or people to be tracked.
Real-time text (RTT) is a communication method that allows text to be transmitted instantly as it is typed, rather than waiting for the sender to complete a message before sending it. This technology enables participants in a conversation to see each other’s text input in real time, which can enhance the flow of communication, especially in situations such as phone calls, video conferencing, or online chat.
Stephen J. Mellor is a prominent figure in the field of software engineering, particularly known for his work in model-driven development (MDD) and the use of modeling languages. He is one of the co-founders of the Object Management Group (OMG), which is an organization that focuses on developing standards for software modeling and interoperability.
Alan Hodgkin (1914–1998) was a prominent British physiologist best known for his work in the field of neurophysiology. He made significant contributions to the understanding of the electrical properties of nerve cells. Along with Andrew Huxley, Hodgkin received the Nobel Prize in Physiology or Medicine in 1963 for their research on the ionic mechanisms involved in the propagation of action potentials in neurons, which was crucial for understanding how signals are transmitted in the nervous system.
Albert von Kölliker (1817–1905) was a prominent Swiss anatomist and physiologist known for his significant contributions to the fields of histology and embryology. He is often recognized for his work on muscle and nerve tissues, as well as for his advances in microscopy. Kölliker was an early advocate for the use of the microscope in biological research and made important strides in the understanding of cellular structures and functions.
Alexander von Humboldt (1769–1859) was a Prussian geographer, naturalist, explorer, and a key figure in the development of scientific disciplines such as geography, environmental science, and ecology. He is often considered a pioneer in the field of physical geography and is famed for his explorations and comprehensive studies of the natural world.
Robert Burns Woodward (1917–1979) was a prominent American organic chemist renowned for his contributions to the field of chemistry, particularly in the area of natural product synthesis. He is best known for his work in developing synthetic methods for complex organic molecules, earning him significant recognition and respect within the scientific community.
Edgar Adrian, also known as Sir Edgar Douglas Adrian, was a prominent British physiologist and biophysicist, born on November 30, 1889, and passed away on August 4, 1977. He is best known for his pioneering work in the field of neurophysiology, particularly for his research on the electrical activity of neurons and the mechanism of nerve impulse transmission.
Eduard Suess (1831–1914) was an Austrian geologist and paleontologist known for his work in the fields of geology and earth sciences. He is best remembered for his contributions to the understanding of stratigraphy and for the concept of the "Gondwana" supercontinent, which included parts of present-day South America, Africa, Antarctica, Australia, and the Indian subcontinent.
Edward Troughton (1753–1822) was a notable British instrument maker, primarily known for his contributions to the field of astronomical instruments, such as telescopes and various types of scientific apparatus. He gained recognition for his high-quality workmanship and innovations in instrument design during the late 18th and early 19th centuries. Troughton was a prominent figure among astronomers and surveyors of his time, and his instruments were widely used for observational astronomy and other scientific measurements.
Frederick Gowland Hopkins (1861–1947) was a British biochemist renowned for his discoveries in the field of nutrition and biochemistry. He is most famously known for his work on vitamins, which significantly advanced the understanding of essential nutrients required for health. In 1929, Hopkins was awarded the Nobel Prize in Physiology or Medicine, which he shared with Christiaan Eijkman, for their contributions to the understanding of vitamins and their role in metabolism.
James Cook refers to a famous British explorer and navigator, Captain James Cook (1728–1779), who is known for his voyages of exploration in the Pacific Ocean and for mapping significant areas of the region, including parts of New Zealand and Australia. Cook made three major voyages to the Pacific, during which he made important contributions to cartography, ethnography, and the understanding of geography of the territories he explored.

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