18 citations · 36 across the 13 of their papers we have counts for
Showing 2005 · math.SPShow all
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math.SP2005★ 5 cited
On Temple--Kato like inequalities and applications
Luka Grubisic
We give both lower and upper estimates for eigenvalues of unbounded positive definite operators in an arbitrary Hilbert space. We show scaling robust relative eigenvalue estimates…
math.SP2005
On weakly formulated Sylvester equations and applications
Luka Grubisic, Kresimir Veselic
We use a ``weakly formulated'' Sylvester equation to obtain new bounds for the rotation of spectral subspaces of a nonnegative selfadjoint o…
math.SP2005
On eigenvalue and eigenvector estimates for nonnegative definite operators
Luka Grubisic
In this article we further develop a perturbation approach to the Rayleigh--Ritz approximations from our earlier work. We both sharpen the estimates and extend the applicability of…