Notation and colours
The book follows Postorino and Zollo’s notation throughout. Symbols are listed here as the sections introduce them.
Colours
Colours carry meaning, and the same colour means the same thing in the text and in the demos, in both themes.
| Colour | Used for | |
|---|---|---|
| , , | red, green, blue | a family indexed |
| violet | what you move | |
| darker violet | what a map makes of it | |
| orange | what is being looked for |
Marks
- Essential: one of the few definitions everything else is built on (Index of terms).
- beyond the lectures: added for this book: a proof the lectures skip, an example, a picture, a result they state without deriving. Everything unmarked is in Postorino and Zollo’s lectures.
- Proofs, solutions and asides are folded; click to open them. A link with a dotted underline opens what it names in place; click it again to close.