D. Yakubovich

activity

20052021

C_{0}

-semigroups of composition operators

15 citations · 74 across the 21 of their papers we have counts for

collaborators

Showing 2015Show all

3 papers · 1 filter

math.FA2015

Tests for complete $K$ -spectral sets

Michael A. Dritschel, Daniel Estévez, Dmitry Yakubovich

Let $Φ$ be a family of functions analytic in some neighborhood of a complex domain $Ω$ , and let $T$ be a Hilbert space operator whose spectrum is contained in $Ω$ . Our typ…

math.SP2015★ 7 cited

Completeness of rank one perturbations of normal operators with lacunary spectrum

Anton D. Baranov, Dmitry V. Yakubovich

Suppose $A$ is a compact normal operator on a Hilbert space $H$ with certain lacunarity condition on the spectrum (which means, in particular, that its eigenvalues go to…

math.CV2015★ 2 cited

Traces of analytic uniform algebras on subvarieties and test collections

Michael A. Dritschel, Daniel Estévez, Dmitry Yakubovich

Given a complex domain $Ω$ and analytic functions $φ_{1}, \dots, φ_{n} : Ω \to D$ , we give geometric conditions for $H^{\infty} (Ω)$ to be generated by functions of the form $g \ci…

Tests for complete K-spectral sets

Completeness of rank one perturbations of normal operators with lacunary spectrum

Traces of analytic uniform algebras on subvarieties and test collections

Tests for complete $K$ -spectral sets