nLab flat resolution lemma

Contents

Context

Homological algebra

homological algebra

(also nonabelian homological algebra)

Introduction

Context

Basic definitions

Stable homotopy theory notions

Constructions

Lemmas

diagram chasing

Schanuel's lemma

Homology theories

Theorems

Contents

Idea

The flat resolution lemma in homological algebra say that the Tor-derived functor, which a-priori is defined via projective resolutions, may also be computed via resolution by flat modules.

References

This appears for instance as lemma 3.2.8 in

and in lemma 19.17.9 and following in

Last revised on November 6, 2013 at 09:09:51. See the history of this page for a list of all contributions to it.