Source: wikibot/mapping-cone-homological-algebra
= Mapping cone (homological algebra)
{wiki=Mapping_cone_(homological_algebra)}
In homological algebra, a mapping cone is a construction that allows us to define a new complex from a given morphism of chain complexes. It plays a significant role in various contexts, such as in the study of derived categories and in the formulation of the Long Exact Sequence in homology.