Pontryagin cohomology operation
= Pontryagin cohomology operation
{wiki=Pontryagin_cohomology_operation}
Pontryagin cohomology is a concept that arises in algebraic topology and is closely related to the study of topological spaces and their properties through the use of cohomological techniques. Specifically, Pontryagin cohomology is a type of characteristic class theory that is used primarily in the context of topological groups and differentiable manifolds.