---
date: 2022-04-01 09:41
modification date: Friday 1st April 2022 09:41:02
title: "pushforward"
aliases: [right derived pushforward]

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


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- Tags 
	- #todo/untagged
- Refs:
	- #todo/add-references
- Links:
	- #todo/create-links 

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# pushforward

Idea: for $f:X\to Y$, $\RR f_*$ measures $H_n(f\inv(U))$ for $U\subseteq Y$ open.