The Kervaire invariant is a concept in algebraic topology, specifically in the study of bordism theory and the classification of high-dimensional manifolds. It is named after the mathematician Michel Kervaire, who introduced it in the context of differentiable manifolds. More formally, the Kervaire invariant is a specific invariant associated with a smooth manifold, particularly focusing on the topology of the manifold's tangent bundle.
Static spacetime is a concept in general relativity that refers to a type of spacetime geometry that is both time-independent (static) and has a specific symmetry. More formally, a static spacetime is one where the gravitational field does not change over time and exhibits certain symmetries, particularly time translation symmetry and spatial symmetry. Key characteristics of static spacetimes include: 1. **Time Independence**: The metric tensor, which describes the geometry of spacetime, does not vary with time.
As of my last knowledge update in October 2021, Thomas Timusk is a prominent physicist known for his contributions to the field of condensed matter physics. He has worked on topics such as superconductivity, magnetism, and other critical phenomena in materials. His research has often focused on the use of experimental techniques to study the properties of materials at low temperatures.
W. G. Unruh is a prominent theoretical physicist known for his work in several areas of physics, including general relativity, quantum field theory, and cosmology. One of his most significant contributions is the formulation of what is now known as the Unruh effect. This phenomenon predicts that an observer accelerating through a vacuum will observe thermal radiation (akin to blackbody radiation), even though an inertial observer in that same vacuum would perceive it as empty space.
Russell W. Porter was an American astronomer and a significant figure in the field of optics and telescope design, particularly known for his pioneering work in amateur astronomy. He is best known for his contributions to the design and construction of high-quality telescopes, particularly the "Porter Garden Telescope," which served as a model for many amateur telescopes in the 20th century.
Vladilen Minin is not a widely recognized figure, concept, or term within the public domain as of my last knowledge update in October 2023. It's possible that he could be a private individual, a local figure, or a recent development that hasn’t gained broad recognition.
Javier Solana is a Spanish politician and diplomat who is well-known for his roles in international relations and diplomacy, especially within European and NATO contexts. Born on July 14, 1942, in Madrid, Spain, he has had a distinguished career in various capacities. Solana served as the Secretary-General of NATO from 1995 to 1999, where he was the first person to hold this position after the organization's restructuring following the end of the Cold War.
Alain E. Kaloyeros is an American engineer and entrepreneur known for his work in the fields of nanotechnology and semiconductor manufacturing. He served as the president of the SUNY Polytechnic Institute, a role in which he was pivotal in developing and promoting advanced manufacturing technologies and research initiatives in New York. Kaloyeros has been recognized for his contributions to technology innovation and economic development, particularly in relation to the semiconductor industry.
Max Valier (1895–1930) was an Austrian rocket pioneer and a key figure in the early development of rocketry. He was one of the first to advocate for the use of liquid-fueled rockets and was influenced by the works of science fiction writers like Jules Verne and H.G. Wells. Valier was heavily involved in various rocketry projects in Europe, collaborating with other pioneers, including Hermann Oberth.
David J. Wineland is an American physicist known for his pioneering work in the field of quantum optics and quantum information science. He has made significant contributions to the development of techniques for manipulating and measuring individual quantum systems, particularly using trapped ions. Wineland's research has important implications for the development of quantum computers and other quantum technologies.
Eric G. Blackman is a notable astrophysicist and professor at the University of Rochester. He is recognized for his research in various areas, including stellar astrophysics, magnetohydrodynamics, and the dynamics of astrophysical jets and outflows. His work often involves the intersection of theoretical modeling and observational data, contributing to our understanding of complex astrophysical phenomena. If you're looking for specific works or contributions by Eric G. Blackman, please let me know!
As of my last knowledge update in October 2021, there is no widely recognized person, place, or concept specifically known as "Fulvia Pilat." It could refer to a specific individual, a fictional character, or a niche subject that may have emerged after my last update.
Joshua Shaevitz is a notable physicist and biologist, known for his work in the fields of biophysics and quantitative biology. He is recognized for his research on the mechanics of biological systems, including the study of cellular processes and the physical principles governing the behavior of biological molecules. Shaevitz has made significant contributions to understanding how forces and motion influence biological functions. He is a professor at Princeton University, where he is involved in teaching and research.
Neal Francis Lane is an American physicist and academic known for his work in the field of theoretical physics and science policy. He served as the director of the National Science Foundation (NSF) from 1993 to 1998 and has held various academic and administrative positions, including at Rice University and as the Chancellor of the University of California, Riverside.
He Yaling could refer to a variety of subjects, as it is a name that might be associated with individuals in different fields. Without specific context, it's difficult to provide a precise answer.
"Antígona Segura" is a contemporary adaptation of the classical Greek tragedy "Antigone," which was originally written by Sophocles. The adaptation is created by the Colombian playwright and philosopher, *María Teresa Hincapié*, and it reinterprets the themes of the original play in a modern context, often dealing with issues of authority, justice, and individual conscience.
As of my last knowledge update in October 2021, there may not be widely known information about an individual named Joanna Sułkowska. It's possible that she could be a private individual, a professional in a specific field, or have gained recognition after that time. If you could provide more context or specify the domain where she is relevant (such as art, science, academia, etc.
Javier Santaolalla is a Spanish physicist, communicator, and popular science educator known for his work in making complex scientific concepts accessible to the general public. He is recognized for his engaging presentations, online courses, and participation in various media platforms where he discusses topics related to physics, science, and technology. Santaolalla has a strong presence on social media and YouTube, where he shares educational content and promotes science literacy.
Jean Jeener is a well-known figure in the field of chemistry, particularly recognized for his contributions to the development of techniques in magnetic resonance, including nuclear magnetic resonance (NMR). He is particularly famous for the invention of the "Jeener-Brooksher experiment," which significantly improved the capabilities of multidimensional NMR spectroscopy. This method has been widely utilized in various fields, including chemistry, biochemistry, and pharmaceuticals, to study molecular structures and dynamics.
As of my last update in October 2023, there doesn't appear to be prominent information about an individual named Kerim Allahverdiyev in widely recognized sources. It's possible that he may be a private individual, a figure from a specific field (like academia, art, etc.), or someone who has gained recognition after that time.

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