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 2017Show all

3 papers · 1 filter

math.FA2017★ 5 cited

Operator inequalities implying similarity to a contraction

Glenier Bello-Burguet, Dmitry Yakubovich

Let $T$ be a bounded linear operator on a Hilbert space $H$ such that \[ α[T^*,T]:=\sum_{n=0}^\infty α_n T^{*n}T^n\ge 0. \] where $α (t) = \sum_{n = 0}^{\infty} α_{n} t^{n}$ is a suitable ana…

math.FA2017★ 15 cited

On generators of $C_{0}$ -semigroups of composition operators

Eva A. Gallardo-Gutiérrez, Dmitry Yakubovich

Avicou, Chalendar and Partington proved that an (unbounded) operator $(A f) = G \cdot f^{'}$ on the classical Hardy space generates a $C_{0}$ semigroup of composition operators if and only…

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…

Operator inequalities implying similarity to a contraction

On generators of C0​-semigroups of composition operators

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

On generators of $C_{0}$ -semigroups of composition operators