nLab
null homotopy

Context

Homotopy theory

Homological algebra

homological algebra

and

nonabelian homological algebra

Context

Basic definitions

Stable homotopy theory notions

Constructions

Lemmas

diagram chasing

Homology theories

Theorems

Contents

Definition

In the context of homological algebra, a null homotopy is a chain homotopy from (or to) the zero map.

References

Section 1.4 of

Revised on September 24, 2012 13:48:38 by Urs Schreiber (82.169.65.155)