---
date: 2022-02-13 16:29
modification date: Sunday 13th February 2022 16:29:02
title: Cech cohomology
aliases: [Cech cohomology]

---

Tags: 
?
Refs:
?

# Cech cohomology

![](attachments/Pasted%20image%2020220315144042.png)
![](attachments/Pasted%20image%2020220315144056.png)
![](attachments/Pasted%20image%2020220315151011.png)

## In terms of simplices

![](attachments/Pasted%20image%2020220213162904.png)
![](attachments/Pasted%20image%2020220213162924.png)


![](attachments/Pasted%20image%2020220315143935.png)
![](attachments/Pasted%20image%2020220315143949.png)
![](attachments/Pasted%20image%2020220315144002.png)

## Example: $S^1$ computation

![](attachments/Pasted%20image%2020220315151218.png)
![](attachments/Pasted%20image%2020220315151247.png)
![](attachments/Pasted%20image%2020220315151257.png)