- Prasanna Venkatesh on LinkedIn
- What is a Group? Youtube
- What is Group theory? Wikipedia
- Rubik’s Cube group Wikipedia
- Notes for a 2-week course on Rubik’s Cube and Group Theory taught by Janet Chen – a senior preceptor at Harvard University
- A course on Modern Algebra
- Intro and Outro music by Lee Rosevere ‘Here’s the thing‘ from Music for Podcasts 3
- Corrigendum: A 180 degree rotation for a rectangle is also a symmetry. A zero degree rotation is the identity element for the rectangle symmetry group.