Evgueni Doubtsov

collaborators

4 papers

math.FA2026

Square function characterization of Hardy-type spaces

Evgeny Abakumov, Evgueni Doubtsov, Dmitry Rutsky

The well-known characterization of Hardy spaces $H_{p} (D)$ , $0 < p < \infty$ , in terms of the Littlewood-Paley g-function $$ S f (Î¶) = \left(\int_0^1 |f' (r Î¶)|^…

math.CV2026

Composition operators between de Branges-Rovnyak and Hardy spaces

Evgueni Doubtsov, Andrei V. Vasin

Let $d \geq 1$ and $I ¨ : B_{d} \to D$ be a holomorphic function, where $B_{d}$ denotes the open unit ball of $C^{d}$ and $D = B_{1}$ . Let $b: \mathbb{D} \to \mathbb{D…

math.CA2026

Weighted Chui's conjecture

Evgueni Doubtsov, Anton Tselishchev, Ioann Vasilyev

The goals of this paper are threefold. First, we show that a counterpart of the Newman bound related to the Chui conjecture is valid in the case where the gradient of Coulomb poten…

math.CV2026

Composition operators between model and Hardy spaces

Evgueni Doubtsov

Let $n \geq 1$ and $I ¨ : D^{n} \to D$ be a holomorphic function, where $D$ denotes the open unit disk of $C$ . Let $I^ : D \to D$ be an…