---
date: 2022-01-23 19:31
modification date: Sunday 23rd January 2022 19:31:26
title: contraction
aliases: [contraction, extension, ideal contraction, ideal extension]

---

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

---

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

---

# contraction

# contraction and extension of ideals

![](attachments/Pasted%20image%2020220123193140.png)

![](attachments/Pasted%20image%2020220128224747.png)