Henri Cartan was a prominent French mathematician, born on July 8, 1904, and he passed away on August 13, 2008. He was known for his contributions to several areas of mathematics, including topology, algebraic topology, and homological algebra. Cartan was a key figure in the development of sheaf theory and cohomology, and he played an important role in the establishment of algebraic geometry and the theory of complex spaces.
It takes as input three vectors, and outputs one real number, the volume. And it is linear on each vector. This perfectly satisfied the definition of a tensor of order (3,0).
Given a basis and a function that return the volume of a parallelepiped given by three vectors , .
Determinant by Ciro Santilli 40 Updated 2025-07-16
Name origin: likely because it "determines" if a matrix is invertible or not, as a matrix is invertible iff determinant is not zero.
Matrix multiplication by Ciro Santilli 40 Updated 2025-07-16
Since a matrix can be seen as a linear map , the product of two matrices can be seen as the composition of two linear maps:
One cool thing about linear functions is that we can easily pre-calculate this product only once to obtain a new matrix, and so we don't have to do both multiplications separately each time.
Faugère's F4 and F5 algorithms are important algorithms in computer algebra for solving systems of polynomial equations and performing computations in polynomial rings. They are particularly useful in the context of Gröbner bases, which are a fundamental tool for solving problems in algebraic geometry, coding theory, cryptography, and other areas requiring polynomial manipulation.
Pollen DNA barcoding is a molecular technique used to identify and categorize different types of pollen grains based on their genetic material. It leverages the principles of DNA barcoding, which involves sequencing a short, standardized region of DNA that is unique to each species. By analyzing these genetic sequences, researchers can create a "barcode" that distinguishes one species from another.
Sturm's theorem, or Sturm's sequence, is a mathematical result concerning the number of real roots of a polynomial within a given interval. Named after the French mathematician Jacques Charles François Sturm, it provides a systematic way to count the distinct real roots of a polynomial by using Sturm sequences.
Computer science educators are individuals who teach and promote the understanding of computer science concepts, theories, and practices. They can work in a variety of settings, including primary and secondary schools, colleges, universities, and online platforms. Their primary goal is to equip students with the knowledge and skills necessary to understand computer science fundamentals, coding, algorithms, data structures, software development, and other related topics.
Pedro Domingos is a computer scientist and a professor at the University of Washington, known for his work in machine learning, data mining, and artificial intelligence. He has made significant contributions to the field, including research on algorithms and techniques that advance the understanding and application of machine learning. Domingos is also the author of the book "The Master Algorithm," which discusses the concept of a universal learning algorithm that can learn from any type of data.
"Anna Becker" could refer to a number of different people or concepts, as it is a relatively common name. Without additional context, it’s difficult to provide a precise answer. It could refer to: 1. A person, such as a public figure, artist, or professional in a certain field. 2. A fictional character in a book, movie, or TV show. 3. A historical figure or someone notable in a particular domain.
Marie-Louise Saboungi is not a widely recognized individual or term as of my last update in October 2023. It could refer to a specific person or character within a niche context, such as literature, art, or academia, but additional information would be necessary to provide a definitive answer.
As of my last update in October 2021, Michael S. Montalbano does not appear to be a widely recognized public figure or historical figure. If he is a person who has gained prominence after this date, I wouldn't have that information. Could you provide more context or details regarding who he is or what field he is associated with?

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