Corners of Knowledge
A triskaidecagon with 13 corners
- Everything
- Everything
- Nothing
- Omniverse
- History
- Stonehenge
- Stone of Scone
- Mathematics
- Division by zero
- 0.999...
- Infinite monkey theorem
- Time
- Time travel
- Physics
- Reflection (physics)
- Supermassive black hole
- Portal (fiction)
- Invisibility