Alexander's Star is a type of star polygon represented by the Schläfli symbol \(\{m/n\}\), where \(m\) indicates the number of vertices and \(n\) indicates the step used to connect these vertices. Specifically, Alexander's Star refers to the star polygon \(\{5/2\}\), which has 5 vertices and connects every second vertex.
"Mercha Kefula" is a Hebrew term that translates to "double market" or "dual market." In the context of Israeli economics and finance, it refers to a system where there are two parallel markets operating for a particular commodity, currency, or asset. These markets may have different pricing or trading conditions.
Approximate computing is a computing paradigm that focuses on leveraging the inherent tolerance for errors in certain applications to gain performance improvements, reduce power consumption, and enhance overall efficiency. Instead of striving for exact calculations and outputs, approximate computing allows for the use of simplified algorithms, reduced precision, or fewer resources in scenarios where exactness is not critical.
Electronic calculator companies are businesses that design, manufacture, and sell electronic calculators, which are devices used for performing mathematical calculations. These calculators range from simple models that perform basic arithmetic to advanced scientific and graphing calculators that can handle complex equations and functions. Here are some notable companies that are well-known for producing electronic calculators: 1. **Casio**: Casio is a major player in the calculator market, offering a wide range of calculators including basic models, scientific calculators, and advanced graphing calculators.
Gershayim is a type of cantillation mark (trope) used in Hebrew scripture, particularly in the reading of the Torah (Pentateuch) and other biblical texts. It is represented by a specific symbol that appears above the letters. In the context of the cantillation system, each trope has its own musical notation and function, guiding how a text should be chanted or read aloud.
"Ole" refers to a specific type of cantillation mark used in the Jewish tradition during the chanting of the Torah and other sacred texts. Cantillation marks, known as "trop," indicate how phrases and verses should be vocalized, emphasizing particular melodic patterns and guiding the reader on how to inflect the text. The "ole" mark signifies a melodic rise, often suggesting an emotional uplift in the chant.
Selma Freud does not appear to be a widely recognized figure in psychology or psychoanalysis, nor is it a generally known term related to these fields. It is possible that you might be referring to someone named Selma who is associated with Sigmund Freud, the founder of psychoanalysis.
Edward Snowden in 2013
. Source. From the film Prism, during interview with reporter Glenn Greenwald.Edward Snowden original interview cut by The Guardian (2013)
Source. The problem as with many well known science communicators is that he falls too much on the basic side of the the missing link between basic and advanced.
Jim Baggott selects the topics for his books by writing about things he wants to know more about by 
Ciro Santilli 40 Updated 2025-07-16
Ciro Santilli 40 Updated 2025-07-16Mentinoned at en.wikipedia.org/wiki/Jim_Baggott quoting popsciencebooks.blogspot.com/2012/09/jim-baggott-four-way-interview.html
Ciro Santilli and Jim would get along mighty well: there is value in tutorials written by beginners.
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!
Intro to OurBigBook
. Source. We have two killer features:
- 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-calculusArticles 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/derivativeVideo 2. OurBigBook Web topics demo. Source. - 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.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
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. 
- Infinitely deep tables of contents:
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