About
About Open Semester
Open Semester publishes complete university courses, free, one lecture at a time. Each course runs like a real semester: weekly lectures and recitations, a course book, problem sheets and full worked solutions.
It is for anyone who wants to learn properly, wherever they are: students following along with their own semester, people returning to a subject years later, and anyone simply curious. Nothing is behind a paywall, and it stays that way. New courses are added over time, each one a full semester from the first lecture to the final exam.
How it is made
Courses are planned and edited by Avia and narrated by a synthetic voice. Every calculation on screen is checked against the written solutions before release. All content is original.
Licence
The course materials (course book, problem sheets, solutions and the other PDFs on this site) are licensed under Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0). You may share and adapt them for non-commercial purposes, with credit to Open Semester, under the same licence.
The videos are published on YouTube under the Standard YouTube Licence.
Credits
Tools and fonts used to make the courses and this site, with their licences.
| Item | Used for | Licence |
|---|---|---|
| Manim Community 0.22 | Lecture animations | MIT |
| Kokoro-82M (kokoro-onnx), voice af_heart | Narration | Apache 2.0 |
| LaTeX (TeX Live), tcolorbox, TikZ | Course book, problem sheets | LPPL; output is ours |
| Linux Libertine, newtx math | Book and sheet typesetting | SIL OFL 1.1 / LPPL |
| Inter | Slide text, this website | SIL OFL 1.1 (licence) |
| ffmpeg | Joining video segments | LGPL/GPL; output is ours |
| EB Garamond | This website | SIL OFL 1.1 (licence) |
| Astro | This website | MIT |
| KaTeX | This website | MIT |
| Pagefind | This website | MIT |
| lite-youtube-embed | This website | Apache 2.0 |
| Rough Notation | This website | MIT |
Privacy
This site sets no cookies and has no analytics or trackers. If you mark lectures as done or answer a "Check yourself", that is saved in your own browser (local storage) and never sent anywhere; clearing your browser data removes it. Videos are embedded from youtube-nocookie.com and only load when you press play; from then on YouTube's own terms apply.
Contact
Questions, corrections and suggestions are welcome: [email protected].