---
date: 2022-04-05 23:42
modification date: Friday 8th April 2022 15:50:46
title: "cohomology theory"
aliases: [cohomology theory]
---

Last modified date: <%+ tp.file.last_modified_date() %>

---
- Tags: 
	- #todo/untagged
- Refs:
	- #todo/add-references
- Links:
	- [Infinite loop space](Unsorted/Infinite%20loop%20space.md)

---

# cohomology theory

Tags: #todo

When does a cohomology theory admit a ring structure? Or a [DGA](differential%20graded%20algebras)? #todo/questions 


![](attachments/Pasted%20image%2020220408155045.png)