Their status is a mess as of 2020s, with several systems ongoing. Long live the "original" collegiate university!
Vladimir Petviashvili is a prominent theoretical physicist from Georgia, known primarily for his work in the field of plasma physics and nonlinear dynamics. He has made notable contributions to the study of solitons, plasma waves, and the behavior of various physical systems governed by nonlinear equations. One of his significant achievements includes the formulation of mathematical models that describe the properties of solitons.
A spatiotemporal database is a type of database designed to manage and query data that includes both spatial (geographic) and temporal (time-related) information. It allows users to store, retrieve, and analyze data that changes over time and has a location component, making it particularly useful in various applications such as geographic information systems (GIS), environmental monitoring, urban planning, traffic management, and more.
Luisa María Lara is not a widely recognized name in popular culture, history, or current events, at least up to my knowledge cutoff in October 2023. It’s possible that she could be a private individual, a lesser-known figure, or a name that has gained prominence after that date.
Peter Levashov, also known as Peter Sever, is a notable Russian cybercriminal and hacker. He was known for his involvement in a number of high-profile cybercrimes, including the operation of the Kelihos botnet, which was responsible for sending massive amounts of spam and facilitating various types of online fraud, such as identity theft and distribution of malware.
The Visible Multi-Object Spectrograph (VIMOS) is an instrument designed for use on large ground-based telescopes, particularly the Very Large Telescope (VLT) at the European Southern Observatory (ESO) in Chile. VIMOS is primarily used for spectroscopy, a technique that involves splitting light into its component wavelengths (or colors) to analyze the properties of astronomical objects.
The Faint Object Spectrograph (FOS) is an instrument that was used on the Hubble Space Telescope (HST) to analyze the light from faint astronomical objects, enabling astronomers to study their composition, temperature, motion, and other physical properties. The FOS was particularly effective for spectroscopic measurements, which involve breaking down light into its constituent wavelengths to identify the chemical elements present in celestial bodies.
Giacinto Scoles is a prominent figure in the field of mathematics, particularly known for his contributions to functional analysis, spectral theory, and the theory of operator algebras. He has published numerous papers and developed various results that are significant in these areas.
James Kay Graham Watson does not appear to be a widely recognized or notable figure based on the information available up to October 2023. It's possible that you may be referring to an individual who is not well-documented in public sources, or there might be a mix-up in the name.
Manne Siegbahn was a prominent Swedish physicist known for his work in the field of spectroscopy and experimental physics. Born on December 3, 1886, he made significant contributions to the understanding of X-ray spectroscopy and radiation. Siegbahn was awarded the Nobel Prize in Physics in 1924 for his research on the diffraction of X-rays and the development of new spectroscopic techniques.
Pierre Janssen, full name Pierre Jules César Janssen, was a French astronomer born on February 22, 1824, and he passed away on December 23, 1907. He is best known for his contributions to the field of spectroscopy and for his role in the discovery of the element helium. One of his significant achievements was the observation of a solar prominence during a total solar eclipse in 1868.
William Huggins (1824–1910) was a prominent English astronomer known for his pioneering work in astrophysics. He is particularly noted for his contributions to the study of spectroscopy, which is the analysis of the light emitted or absorbed by materials. Huggins was one of the first astronomers to apply spectroscopy to the study of celestial bodies, helping to determine their composition, temperature, and motion.
Direct product by Ciro Santilli 40 Updated 2025-07-16
A Cartesian product that carries over some extra structure of the input groups.
E.g. the direct product of groups carries over group structure on both sides.
The Journal of Molecular Spectroscopy is a scientific journal that focuses on research in the field of molecular spectroscopy. It publishes original research articles, reviews, and short communications that address various aspects of molecular spectroscopy, including theoretical, experimental, and computational studies. Molecular spectroscopy is the study of the interaction of electromagnetic radiation with molecular species, and it plays a critical role in understanding molecular structure, dynamics, and interactions.
"Speeches by century" typically refers to notable speeches that were delivered throughout different centuries in history. Such speeches are often recognized for their impact on society, politics, culture, or historical events. Here’s an overview of some significant speeches from various centuries: ### 18th Century (1700s) - **"Give me liberty, or give me death!
"Speeches by decade" typically refers to a collection or categorization of notable speeches organized by the decade in which they were delivered. This can encompass a wide range of topics, speakers, and events, reflecting social, political, economic, and cultural changes over time.
Bispinor is a term commonly associated with a class of quantum field theories, specifically in the context of theoretical physics and mathematics. In this context, bispinors refer to mathematical entities that can represent fermions (particles like electrons and quarks) in relativistic quantum mechanics and quantum field theory. Bispinors are constructed using the properties of the Dirac equation, which describes the behavior of spin-½ particles.
Firehose instability is a phenomenon that occurs in plasma physics, particularly in the context of magnetized plasmas, where the particles in the plasma can become unstable under certain conditions. This instability is named after the analogy of a fire hose, which can become unstable and whip around if water is flowing through it at a certain pressure.
S. Srisatkunarajah is not a widely recognized public figure or term, and there are no specific details available on this name in common databases or references. It could refer to a private individual, perhaps in a specific professional or local context not covered in broader sources. If you have more context or information regarding who or what S.

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