"Hong Kong physicists" typically refers to scientists and researchers based in Hong Kong who specialize in the field of physics. Hong Kong has several universities and research institutions, such as the University of Hong Kong, the Chinese University of Hong Kong, and the Hong Kong University of Science and Technology, that contribute to a vibrant physics research community. These physicists may work in various subfields including condensed matter physics, astrophysics, particle physics, quantum mechanics, and theoretical physics, among others.
Filipino physicists are scientists from the Philippines who specialize in the field of physics, studying the fundamental principles that govern the behavior of matter and energy. They contribute to various subfields such as theoretical physics, experimental physics, applied physics, and more. Filipino physicists may work in academic institutions, research organizations, or industries, and they can be involved in scientific research, teaching, and the development of new technologies.
Disqus by Ciro Santilli 37 Updated +Created
Discrete mathematics by Ciro Santilli 37 Updated +Created
Yutaka Yamamoto is a mathematician known for his contributions to the field of mathematics, particularly in areas such as number theory and algebra. He has been involved in various research projects and has published papers that contribute to the advancement of mathematical knowledge. However, specific details about his work and achievements may vary, as there could be several mathematicians with similar names, and public information about individuals might not be extensively documented.
Yoshiro Mori is a Japanese mathematician known for his contributions to various fields, particularly in mathematical sciences. His work often focuses on areas such as probability theory, statistics, and mathematical analysis. Mori has contributed to the understanding of stochastic processes and has been involved in research that bridges pure mathematics and applied mathematics.
Discrete Fourier transform by Ciro Santilli 37 Updated +Created
Input: a sequence of complex numbers .
Output: another sequence of complex numbers such that:
Intuitively, this means that we are braking up the complex signal into sinusoidal frequencies:
  • : is kind of magic and ends up being a constant added to the signal because
  • : sinusoidal that completes one cycle over the signal. The larger the , the larger the resolution of that sinusoidal. But it completes one cycle regardless.
  • : sinusoidal that completes two cycles over the signal
  • ...
  • : sinusoidal that completes cycles over the signal
and is the amplitude of each sine.
We use Zero-based numbering in our definitions because it just makes every formula simpler.
Motivation: similar to the Fourier transform:
In particular, the discrete Fourier transform is used in signal processing after a analog-to-digital converter. Digital signal processing historically likely grew more and more over analog processing as digital processors got faster and faster as it gives more flexibility in algorithm design.
Sample software implementations:
Figure 1.
DFT of with 25 points
. This is a simple example of a discrete Fourier transform for a real input signal. It illustrates how the DFT takes N complex numbers as input, and produces N complex numbers as output. It also illustrates how the discrete Fourier transform of a real signal is symmetric around the center point.
Saudi Arabian physicists are scientists from Saudi Arabia who specialize in the field of physics. They can work in various areas such as theoretical physics, experimental physics, condensed matter physics, astrophysics, and many other sub-disciplines. The kingdom has invested significantly in education and research, leading to the development of institutions such as King Abdullah University of Science and Technology (KAUST) and King Saud University, which have contributed to advancements in various scientific fields.
Yasumasa Kanada by Wikipedia Bot 0
Yasumasa Kanada is a renowned Japanese mathematician and computer scientist, best known for his contributions to the field of numerical analysis and the study of algorithms. He is particularly recognized for his work in the field of computation of mathematical constants, including π (pi). Over the years, Kanada has been involved in various projects that utilize high-performance computing, and he is known for setting several records for the fastest calculations of π.
Discogs by Ciro Santilli 37 Updated +Created
The IMDb of music! They actually have a reputation system apparently. And sneaked in a vinyl marketplace as well.
The website name sounds like play on words: disc + hog, with hog in the sense "memory-hog", i.e. something that consumes all your computer's memory.
Video 1.
Everything you need to know about discogs.com by Vinyl for Miles (2019)
Source. Gives a good overview of the website.
Video 2.
AnalogPlanet Interviews Discogs Founder Kevin Lewandowski (2019)
Source.
RUNCOM by Wikipedia Bot 0
RUNCOM is a term that typically refers to a configuration file or set of procedures used in various computing environments, particularly in Unix-like systems. The name "RUNCOM" is derived from "run commands." Here are a few contexts in which RUNCOM might be used: 1. **Unix and Unix-like Systems**: In these environments, RUNCOM files are scripts run by the shell during startup. For example, files such as `.bashrc`, `.bash_profile`, or `.
Xiong Qinglai by Wikipedia Bot 0
Xiong Qinglai is a renowned Chinese artist known for his work in various forms of visual art, including painting and installation art. His work often explores themes of identity, culture, and the intersection between traditional Chinese art and contemporary practices. Xiong's style can be characterized by a unique blend of traditional techniques with modern concepts, making his pieces both thought-provoking and visually striking.
Direct product by Ciro Santilli 37 Updated +Created
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.
Vikraman Balaji by Wikipedia Bot 0
As of my last update in October 2023, there is no widely known figure or concept specifically named "Vikraman Balaji." It's possible that you may be referring to a person who has gained recognition more recently or a name that is not widely documented in available sources.
Vaṭeśvara by Wikipedia Bot 0
Vaṭeśvara, also known as Vateśvara or Vateshvara, is a deity in Hinduism, often associated with the sacred fig tree (Ficus religiosa), which is also referred to as the "pipal" or "bo tree." The term "Vaṭa" refers to the banyan or fig tree, and "Ishvara" means "lord" or "god.
Directed graph by Ciro Santilli 37 Updated +Created
Directed and undirected graphs by Ciro Santilli 37 Updated +Created
Directed acyclic graph by Ciro Santilli 37 Updated +Created

Pinned article: ourbigbook/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 5. . 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.
  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