Algebrica is a free, ad-free, university-level mathematics knowledge base. This repository hosts the source content of the entries published on the site, released progressively in Markdown format and reusable under a non-commercial license.
About the content
Each entry on Algebrica is written from scratch, drawing on a broad range of sources: university textbooks, lecture notes, and reference works in mathematics. The selection, structure, and presentation of the material are shaped by an engineering background.
Where sources differ in notation or emphasis, they are compared and reconciled, then reorganised into a single coherent flow that follows a deliberate, logical progression. The resulting content is original: each entry is an independent exposition, built from the ground up to be accurate while remaining clear for the intended reader.
The editorial aim is to reduce without distorting. University sources are often dense by necessity, and part of the work is finding what can be made more direct without losing precision.
Editorial process
The process is iterative. A page that seems complete may be revisited as adjacent entries develop, and inconsistencies in notation or depth often prompt further revision. Entries are progressively released and updated here on GitHub.
To increase transparency, I am also documenting the editorial process and revising content to improve accuracy and reliability. On some pages a quality indicator is now visible, including a GPTZero score (no affiliation), as an additional signal of transparency. The score, expressed as a percentage, represents the system’s level of confidence that the content is human. For example, a score of 92% means that the text is considered human with 92% confidence.
Since I am not a native English speaker, I also rely on Grammarly (no affiliation) to support the proofreading of the texts.
Repository structure
In the Algebrica GitHub repository I’m progressively releasing not only all the entries in Markdown format, but also all the diagrams and illustrations as open and fully editable SVG files to improve the accessibility and reusability of the content.
The SVG images can be freely modified, reused, and adapted for educational purposes, making the graphical structure of the entries fully inspectable and portable alongside the text itself.
License
Content is released under Creative Commons Attribution-NonCommercial 4.0 (CC BY-NC 4.0). It can be reused for non-commercial purposes, with attribution.
Links
- Website: algebrica.org
- X: @antoniolupetti