The Central Bureau of Statistics (CBS) in Aruba is the government agency responsible for the collection, analysis, and dissemination of statistical information related to Aruba. It operates under the Ministry of Finance, Economic Affairs, and Culture and aims to provide accurate and reliable data that supports informed decision-making by government, businesses, and the public. The CBS conducts various surveys and research projects to gather data on demographics, the economy, labor market conditions, social issues, and other relevant topics.
Susan Landau is an American expert in the fields of cybersecurity and cryptography. She has worked extensively in areas related to privacy, security, and the complexities of technology policy. Landau has held academic positions and has also worked for companies in the tech industry. She is known for her writings and contributions to the understanding of how technology intersects with societal issues, including government surveillance and encryption debates. Her work often emphasizes the importance of balancing security needs with civil liberties.
Susumu Okubo (1916–2001) was a prominent Japanese physicist known for his contributions to the field of particle physics, particularly in the development of the quark model and the understanding of mesons and baryons. He is best remembered for the Okubo mixing, a theoretical concept that describes the mixing of different particle states due to symmetries in particle interactions.
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"Firearms by designer" typically refers to firearms that are categorized or identified by their design and the individuals or companies that created them. This designation can include a wide range of firearms, such as handguns, rifles, shotguns, and military firearms, each associated with specific designers or manufacturers known for their innovation, craftsmanship, and influence in the firearms industry.
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The Polish Enigma double refers to a specific type of cryptographic machine used during World War II, named after its relation to the Enigma machine utilized by the German military. The "Polish Enigma" itself relates to the early work by Polish mathematicians and cryptologists in the 1930s, particularly Marian Rejewski, who played a crucial role in breaking the Enigma cipher.
Symplectic space is a fundamental concept in mathematics, specifically in the field of symplectic geometry, which is a branch of differential geometry and Hamiltonian mechanics. A symplectic space is a smooth, even-dimensional manifold equipped with a closed non-degenerate differential 2-form called the symplectic form.
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In physics, the term "ghost" often refers to a concept in the context of quantum field theory, particularly in gauge theories and theories involving quantum gravity. Ghosts are typically unphysical states that can arise in the quantization of certain theories, particularly in the process of fixing gauge invariance. 1. **Gauge Theories**: In many quantum field theories, particularly those describing fundamental forces (like electromagnetism or the weak force), gauge invariance is a crucial symmetry.
Mattel, Inc. is a multinational toy company known for designing, manufacturing, and marketing a wide range of toys and entertainment products. Founded in 1945 by Ruth Handler, Elliot Handler, and Harold "Matt" Matson, the company is best known for its iconic brands, including Barbie, Hot Wheels, Fisher-Price, and American Girl, among others. Mattel has played a significant role in the toy industry, innovating and shaping trends over the decades.
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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