10 citations · 10 across the 2 of their papers we have counts for
2 papers
math.SP2007★ 10 cited
Spectral perturbation bounds for selfadjoint operators
K. Veselic
We give general spectral and eigenvalue perturbation bounds for a selfadjoint operator perturbed in the sense of the pseudo-Friedrichs extension. We also give several generalisatio…
math.DS2004
Bounds for contractive semigroups and second order systems
Kresimir Veselic
We derive a uniform bound for the difference of two contractive semigroups, if the difference of their generators is form-bounded by the Hermitian parts of the generators themselve…