Source: wikibot/homological-dimension
= Homological dimension
{wiki=Homological_dimension}
Homological dimension is a concept from homological algebra that measures the "size" or "complexity" of an object in terms of its projective or injective resolutions. It provides a way to classify objects in terms of their relationships with projective and injective modules, often in the context of modules over rings or sheaves over topological spaces.