nLab
exact triangle

Context

Homological algebra

homological algebra

and

nonabelian homological algebra

Context

Basic definitions

Stable homotopy theory notions

Constructions

Lemmas

diagram chasing

Homology theories

Theorems

Contents

Definition

References

Around remark 1.3.5 of

Created on August 24, 2012 14:27:36 by Urs Schreiber (82.113.106.22)