This article does not cite any sources. (September 2019) (Learn how and when to remove this template message)
In mathematics a cocycle is a closed cochain. Cocycles are used in algebraic topology to express obstructions (for example, to integrating a differential equation on a closed manifold). They are likewise used in group cohomology. In autonomous dynamical systems, cocycles are used to describe particular kinds of map, as in the Oseledec theorem.
|This mathematics-related article is a stub. You can help Wikipedia by expanding it.|