| Class 1 |
3/1/06 |
Introduction, overview, basic definitions |
| Class 2 |
5/1/06 |
Universal properties |
| Class 3 |
10/1/06 |
Functors, natural transformations |
| Class 4 |
12/1/06 |
Representability, Yoneda |
| Class 5 |
17/1/06 |
Limits and colimits: definition and examples of small
limits |
| Class 6 |
19/1/06 |
Limits and colimits: limits in set, limits from products
and equalisers, colimits |
| Class 7 |
24/1/06 |
Limits and colimits: preservation, reflection, creation,
how to compute limits of functors viz pointwise (we didn't do interchange). - Example sheet 1 available in ps or pdf. |
| Class 8 |
26/1/06 |
Adjunctions: basic definitions, examples |
| Class 9 |
31/1/06 |
Adjunctions |
| Class 10 |
2/2/06 |
Adjoint functor theorems |
| Class 11 |
7/2/06 |
A bit more on AFTs, leading to Kan extensions |
| Class 12 |
9/2/06 |
Ends an coends, leading to pointwise Kan extensions,
density, every presheaf is a colimit of representables |
| Class 13 |
14/2/06 |
Monads and their algebras - Example sheet 2 available in ps or pdf. |
| Class 14 |
16/2/06 |
Category of algebras (Eilenberg-Moore construction),
comparison functor, Monadicity |
| Class 15 |
21/2/06 |
Monadicity theorems |
| Class 16 |
23/2/06 |
Monoidal categories, bicategories, coherence |
| Class 17 |
28/2/06 |
Monoidal categories with structure, logic |
| Class 18 |
2/3/06 |
Enrichment and internalisation, n-categories - Example sheet 3 available in ps or pdf. |
| Class 19 |
7/3/06 |
Double categories, 2-groups and crossed modules (Tom Fiore) |
| Class 20 |
9/3/06 |
Model categories (Tom Fiore) |