most citedSome sharp norm estimates in the subspace perturbation problem

12 citations · 12 across the 2 of their papers we have counts for

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2 papers

math.SP2005

The a priori tanθtheorem for eigenvectors

Sergio Albeverio, Alexander K. Motovilov, Alexei V. Selin

Let be a self-adjoint operator on a Hilbert space $\fH$. Assume that the spectrum of consists of two disjoint components and such that the convex hull of the se…

math.SP2004★ 12 cited

Some sharp norm estimates in the subspace perturbation problem

Alexander K. Motovilov, Alexei V. Selin

We discuss the spectral subspace perturbation problem for a self-adjoint operator. Assuming that the convex hull of a part of its spectrum does not intersect the remainder of the s…