---
date: 2022-09-05 14:06
modification date: Monday 5th September 2022 14:06:31
title: "Lefschetz principle"
aliases: [Lefschetz principle]
---

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# Lefschetz principle

![](attachments/Pasted%20image%2020220905140634.png)

A typical application:
![](attachments/Pasted%20image%2020220905140643.png)