The n-Category Café
A group blog on math, physics and philosophy.
- Roughly two posts per week
- First post on
Posts per month
| Month starting | Posts |
|---|---|
| Nov 2022 | 1 |
| Dec 2022 | 5 |
| Jan 2023 | 9 |
| Feb 2023 | 4 |
| Mar 2023 | 7 |
| Apr 2023 | 3 |
| May 2023 | 5 |
| Jun 2023 | 8 |
| Jul 2023 | 4 |
| Aug 2023 | 8 |
| Sep 2023 | 13 |
| Oct 2023 | 4 |
| Nov 2023 | 2 |
| Dec 2023 | 3 |
| Jan 2024 | 2 |
| Feb 2024 | 3 |
| Mar 2024 | 6 |
| Apr 2024 | 9 |
| May 2024 | 3 |
| Jun 2024 | 3 |
| Jul 2024 | 5 |
| Aug 2024 | 9 |
| Sep 2024 | 7 |
| Oct 2024 | 10 |
| Nov 2024 | 5 |
Any gaps could be due to errors when fetching the blog’s feed.
Most recent posts
Previously: Part 8. It’s the penultimate week of the course, and up until now we’ve abstained from using the axiom of choice. But this week we gorged on it. We proved that all the usual …
Previously: Part 7. Next: Part 9. By this point in the course, we’ve finished the delicate work of assembling all the customary set-theoretic apparatus from the axioms, and we’ve started proving major theorems. This week, …
Thurston gave a concrete procedure to construct triangulations of the 2-sphere where 5 or 6 triangles meet at each vertex. How can you get the icosahedron using this procedure? Gerard Westendorp has a real knack …