Daniel Est'evez

activity

20122017

most citedResolvent criteria for similarity to a normal operator with spectrum on a curve

2 citations · 3 across the 2 of their papers we have counts for

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math.FA2017★ 2 cited

Resolvent criteria for similarity to a normal operator with spectrum on a curve

Michael A. Dritschel, Daniel Estévez, Dmitry Yakubovich

We give some new criteria for a Hilbert space operator with spectrum on a smooth curve to be similar to a normal operator, in terms of pointwise and integral estimates of the resol…

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.FA2012

Explicit traces of functions on Sobolev spaces and quasi-optimal linear interpolators

Daniel Estévez

Let $Λ \subset R$ be a strictly increasing sequence. For $r = 1, 2$ , we give a simple explicit expression for an equivalent norm on the trace spaces $W_{p}^{r} (R) ∣_{Λ}$ , $L_{p}^{r} (R) ∣_{Λ}$ of t…

Resolvent criteria for similarity to a normal operator with spectrum on a curve

Tests for complete K-spectral sets

Explicit traces of functions on Sobolev spaces and quasi-optimal linear interpolators

Tests for complete $K$ -spectral sets