Recreational mathematics is a branch of mathematics that focuses on problems and puzzles that are often pursued for enjoyment, amusement, or intellectual challenge rather than for practical applications. Recreational mathematicians engage in the exploration of mathematical concepts, structures, and problems that may be whimsical, intriguing, or purely for fun.
In group theory, the Artin transfer is a specific homomorphism associated with a certain class of groups called "finite groups." More specifically, it is related to the study of group extensions and the relationships between a group and its normal subgroups. The Artin transfer is particularly relevant in the context of modular representation theory and the representation theory of finite groups of Lie type, as well as in the study of central extensions and cohomology.
Gary C. Bjorklund is a psychologist known for his work in developmental psychology and his contributions to understanding cognitive development in children. He is particularly recognized for his research on how children's cognitive processes evolve over time, as well as for his academic publications and textbooks on developmental psychology. One of his notable works is the textbook "Child Development," co-authored with his colleague, which is widely used in educational settings.
Australia is known for its "Big Things," which are large roadside attractions scattered across the country. These structures often celebrate local culture, industry, or unique aspects of the region. Here are some of the most famous Big Things in Australia: 1. **Big Banana** (Coffs Harbour, NSW) - An iconic banana-shaped attraction that includes a theme park. 2. **Big Pineapple** (Woombye, QLD) - A giant pineapple that has a visitor center and a plantation.
Russian cryptographers are individuals from Russia who specialize in the study and practice of cryptography, which is the science of securing communication and information by transforming it into a secure format. This field encompasses a variety of techniques and methodologies for encoding messages, ensuring confidentiality, integrity, authentication, and non-repudiation. Historically, Russia has a prominent role in the development of cryptographic techniques and cryptographic theory, especially during the Cold War era, when secure communication was vital for national security.
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!
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 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
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. 
- 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