---
date: 2023-01-17 16:44
aliases: ["K3s"]
flashcard: "Research::K3s"
---

# General Complex Surfaces

- [x] What does HRR say for surfaces? ✅ 2023-01-17
	- [ ] $\chi(X) = {1\over 12}(c_1^2 + c_2)$, i.e. Noether's formula.
- [ ] What is the Hirzebruch signature theorem?
- [ ] What is Noether's formula?
- [x] What is the Hodge diamond for a surface? ✅ 2023-01-17
	- [ ] ![](attachments/2023-01-17-hodge-general.png)
	- [ ] ![](attachments/2023-01-17-hodge-sfc.png)