Isopsephy is an ancient Greek system of assigning numerical values to letters, similar to gematria in Hebrew. In this system, each letter of the Greek alphabet corresponds to a specific number, and words or phrases can be calculated by adding the values of their constituent letters. This practice was often used in various forms of mysticism, numerology, and philosophy, as well as for finding hidden meanings in texts.
Mathers' table, often referred to in the context of numerical methods and statistics, is a sequential set of computed values that facilitates the calculation of various statistical measures. In particular, it is commonly associated with the area under the normal distribution curve, helping statisticians and mathematicians quickly find the probabilities associated with standard normal deviations.
Invariance of domain is a theorem in topology that relates to the concept of continuous functions between topological spaces, particularly finite-dimensional Euclidean spaces.
The J. H. Wilkinson Prize for Numerical Software is an award given to recognize outstanding contributions to the field of numerical software. Established in honor of the renowned mathematician and numerical analyst John H. Wilkinson, the prize aims to acknowledge the development and implementation of significant numerical algorithms, software, or environments that contribute to advancing numerical analysis and computational mathematics. The prize is typically awarded based on criteria such as the importance, real-world impact, and innovative nature of the software.
The term "Landau set" might refer to several different contexts depending on the specific field or subject matter, but it is not a widely recognized term on its own in popular mathematical or scientific literature. Here are a few possible interpretations: 1. **Landau's Functions**: In mathematics, particularly in number theory, there are functions associated with the mathematician Edmund Landau (often discussed in the context of number theory and the distribution of prime numbers).
László Lovász is a prominent Hungarian mathematician known for his significant contributions to various areas of mathematics, particularly in combinatorics, graph theory, and theoretical computer science. Born on March 9, 1937, he has made foundational contributions to fields such as discrete mathematics and algorithms. One of his notable achievements is the development of the Lovász Local Lemma, a powerful tool in probabilistic combinatorics.
In category theory, a **Lax functor** is a generalization of a functor that allows for the preservation of structures in a "lax" manner. It can be thought of as a way to connect two categories while allowing for a certain degree of flexibility, typically in the form of a "lax" morphism between them that does not need to preserve all of the structure exactly.
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