The history of computer science is a vast and intricate narrative that traces the evolution of computing from ancient tools to the sophisticated technologies we use today. Here's an overview of key milestones and developments in the history of computer science: ### Ancient Foundations - **Abacus (circa 2400 BC)**: One of the earliest known devices for performing arithmetic calculations. - **Algorithms**: The concept of algorithms dates back to ancient civilizations; for example, Euclid's algorithm for finding the greatest common divisor.
"Mirifici Logarithmorum Canonis Descriptio" is a work authored by the Scottish mathematician John Napier, published in 1614. The title translates to "Description of the Wonderful Canon of Logarithms." This seminal work introduced the concept of logarithms, a significant advancement in mathematics that simplifies complex calculations, particularly in multiplication and division. In this work, Napier presents the idea of logarithms, explaining how they relate to exponential functions.
Active and passive transformations are concepts primarily used in the context of data processing, particularly in ETL (Extract, Transform, Load) processes within data warehousing. ### Active Transformation: Active transformations change the number of records that pass through the transformation. They can add, modify, or delete records, which fundamentally alters the data flow. Examples include: - **Filter**: Removes records that do not meet certain criteria.
The term "Representation Theorem" can refer to several concepts across various fields of mathematics, including functional analysis, probability theory, and economics. Here are a few notable examples: 1. **Representation Theorem in Functional Analysis**: In the context of functional analysis, one important representation theorem is the Riesz Representation Theorem. This theorem states that every continuous linear functional on a Hilbert space can be expressed as an inner product with a fixed element of the space.
A planimeter is a measuring instrument used to determine the area of a two-dimensional shape, particularly in fields such as engineering, architecture, and cartography. It works by tracing the perimeter of a figure, allowing the instrument to calculate its area based on the path traced. There are two main types of planimeters: 1. **Mechanical planimeters**: These are typically made of metal and consist of a movable arm attached to a fixed base.
Complexity classes are categories used in computational complexity theory to classify problems based on their inherent difficulty and the resources required to solve them, such as time and space. Here’s a list of some fundamental complexity classes: 1. **P**: - Problems that can be solved in polynomial time by a deterministic Turing machine. 2. **NP**: - Nondeterministic Polynomial time.
Mathematical knowledge management refers to the systematic process of capturing, storing, organizing, retrieving, and sharing mathematical knowledge and resources. This involves managing both the knowledge produced by mathematical theories and practices as well as the data and information generated through mathematical research and applications. Key aspects of mathematical knowledge management include: 1. **Knowledge Capture**: Collecting and codifying mathematical theories, problem-solving techniques, proofs, and case studies.
"Proof" is a play by David Auburn that premiered in 2000 and won the Pulitzer Prize for Drama and the Tony Award for Best Play. The story revolves around Catherine, a young woman who has spent years caring for her brilliant but unstable mathematician father, Robert, who has recently passed away. As she grapples with her grief, her intellectual legacy, and her own mental health, she finds herself at a crossroads.

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