L² cohomology
= L² cohomology
{wiki=L²_cohomology}
L² cohomology is a type of cohomology theory that arises in the context of smooth Riemannian manifolds and the study of differential forms on these manifolds. It is particularly useful in situations where one wants to study differential forms that are square-integrable, that is, forms which belong to the space \\( L^2 \\).