Results 11 to 20 of about 571 (54)

Enhancing parental reflective functioning through early dyadic interventions: A systematic review and meta‐analysis

open access: yesInfant Mental Health Journal: Infancy and Early Childhood, Volume 42, Issue 1, Page 21-34, January/February 2021., 2021
ABSTRACT Parental reflective functioning (PRF) is an important predictor of infant attachment, and interventions that target parent–infant/toddler dyads who are experiencing significant problems have the potential to improve PRF. A range of dyadic interventions have been developed over the past two decades, some of which explicitly target PRF as part ...
Jane Barlow   +2 more
wiley   +1 more source

Bloch‐type space of temperature functions on a finite cylinder

open access: yesJournal of Function Spaces, Volume 5, Issue 3, Page 287-297, 2007., 2007
We define the Bloch‐type space BT as the linear space of temperature functions on the cylinder ST=S1×(0,T) such that sup⁡(x,t)∈T⁡t| ∂u∂t(x,t) |<∞, ΩT = [0,2] × (0, T); we prove that (b1(ST))*=BT, where b1(ST) is the Bergman space of temperature functions on ST belonging to L1(ΩT, dxdt).
Marcos López-García, Hans Triebel
wiley   +1 more source

Singular Schroedinger operators as self-adjoint extensions of n-entire operators [PDF]

open access: yes, 2015
We investigate the connections between Weyl-Titchmarsh-Kodaira theory for one-dimensional Schr\"odinger operators and the theory of $n$-entire operators.
Silva, Luis O.   +2 more
core   +2 more sources

Bergman spaces of temperature functions on a cylinder

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 19, Page 1193-1213, 2003., 2003
We define the weighted Bergman space bβp(ST) consisting of temperature functions on the cylinder ST = S1 × (0, T) and belonging to Lp(ΩT, tβdxdt), where ΩT = (0, 2) × (0, T). For β > −1 we construct a family of bounded projections of Lp(ΩT, tβdxdt) onto bβp(ST).
Marcos López-García
wiley   +1 more source

Duality by reproducing kernels

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2003, Issue 6, Page 327-395, 2003., 2003
Let A be a determined or overdetermined elliptic differential operator on a smooth compact manifold X. Write 𝒮A(𝒟) for the space of solutions of the system Au = 0 in a domain 𝒟⋐X. Using reproducing kernels related to various Hilbert structures on subspaces of 𝒮A(𝒟), we show explicit identifications of the dual spaces.
A. Shlapunov, N. Tarkhanov
wiley   +1 more source

Reproducing Kernels of Weight Square-Summable Sequences Hilbert Spaces

open access: yesAnnales Mathematicae Silesianae, 2019
In this paper we will introduce the concept of weighted reproducing kernel of l2(ℂ) space, in similiar way as it is done in case of weighted reproducing kernel of Bergman space.
Żynda Tomasz Łukasz
doaj   +1 more source

Geometric properties of composition operators belonging to Schatten classes

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 26, Issue 4, Page 239-248, 2001., 2001
We investigate the connection between the geometry of the image domain of an analytic function mapping the unit disk into itself and the membership of the composition operator induced by this function in the Schatten classes. The purpose is to provide solutions to Lotto′s conjectures and show a new compact composition operator which is not in any of ...
Yongsheng Zhu
wiley   +1 more source

Reducing subspaces for multiplication operators on the Dirichlet space through local inverses and Riemann surfaces

open access: yesComplex Manifolds, 2017
This paper gives a full characterization of the reducing subspaces for the multiplication operator Mϕ on the Dirichlet space with symbol of finite Blaschke product ϕ of order 5I 6I 7.
Gu Caixing, Luo Shuaibing, Xiao Jie
doaj   +1 more source

On a class of shift-invariant subspaces of the Drury-Arveson space

open access: yesConcrete Operators, 2018
In the Drury-Arveson space, we consider the subspace of functions whose Taylor coefficients are supported in a set Y⊂ ℕd with the property that ℕ\X + ej ⊂ ℕ\X for all j = 1, . . . , d.
Arcozzi Nicola, Levi Matteo
doaj   +1 more source

Unitary discrete Hilbert transforms

open access: yes, 2010
Weighted discrete Hilbert transforms $(a_n)_n \mapsto \big(\sum_n a_n v_n/(\lambda_j-\gamma_n)\big)_j$ from $\ell^2_v$ to $\ell^2_w$ are considered, where $\Gamma=(\gamma_n)$ and $\Lambda=(\lambda_j)$ are disjoint sequences of points in the complex plane
Belov, Yurii   +2 more
core   +1 more source

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