Subspaces of $L_\infty(G)$ with unique topological left invariant mean

Topologically Left Invariant Mean on Dual Semigroup Algebras

topologically left invariant mean on dual semigroup algebras

Invariant Subspaces, Quasi-invariant Subspaces, and Hankel Operators

In this paper, using the theory of Hilbert modules we study invariant subspaces of the Bergman spaces on bounded symmetric domains and quasi-invariant sub-spaces of the Segal–Bargmann spaces. We completely characterize small Hankel operators with finite rank on these spaces.

Perturbation of invariant subspaces ∗

We consider two different theoretical approaches for the problem of the perturbation of invariant subspaces. The first approach belongs to the standard theory. In that approach the bounds for the norm of the perturbation of the projector are proportional to the norm of perturbation matrix, and inversely proportional to the distance between the corresponding eigenvalues and the rest of the spect...

Continuation of invariant subspaces

In this work we consider implementation and testing of an algorithm for continuation of invariant subspaces.