Results 91 to 100 of about 110,950 (276)

Aluthge transforms of unbounded weighted composition operators in $L^2$-spaces

open access: yes, 2018
We describe the Aluthge transform of an unbounded weighted composition operator acting in an $L^2$-space. We show that its closure is also a weighted composition operator with the same symbol and a modified weight function.
Benhida, Chafiq   +2 more
core  

On weighted generalized composition operators on weighted hardy spaces

open access: yesFilomat, 2020
The present paper introduces the class of weighted generalized composition operators of higher order defined on the weighted Hardy spaces. The study of bounded operators belonging to this class is undertaken and an attempt is made to describe their structural and spectral properties.
Datt, Gopal, Jain, Mukta, Ohri, Neelima
openaire   +2 more sources

Evaluation of in vitro toxicity of common phytochemicals included in weight loss supplements using 1H NMR spectroscopy

open access: yesFEBS Open Bio, EarlyView.
We investigated the toxicity of 12 active compounds commonly found in herbal weight loss supplements (WLS) using human liver and colon cell models. Epigallocatechin‐3‐gallate was the only compound showing significant toxicity. Metabolic profiling revealed protein degradation, disrupted energy and lipid metabolism suggesting that the inclusion of EGCG ...
Emily C. Davies   +3 more
wiley   +1 more source

Weighted composition operators acting from the Lipschitz space to the space of bounded functions on a tree

open access: yes, 2019
We study the weighted composition operators between the Lipschitz space and the space of bounded functions on the set of vertices of an infinite tree.
Hosokawa, Takuya
core  

Spectrum of weighted composition operators. Part II: weighted composition operators on subspaces of Banach lattices [PDF]

open access: yesPositivity, 2012
We describe the spectrum of weighted $d$-isomorphisms of Banach lattices restricted on closed subspaces that are "rich" enough to preserve some "memory" of the order structure of the original lattice. The examples include (but are not limited to) weighted isometries of Hardy spaces on the polydisk and unit ball in $\mathds{C}^n$.
openaire   +2 more sources

Generalized weighted composition-differentiation operators on weighted Bergman spaces

open access: yes, 2023
Let $ \mathcal{H}(\mathbb{D}) $ be the class of all holomorphic functions in the unit disk $ \mathbb{D} $. We aim to explore the complex symmetry exhibited by generalized weighted composition-differentiation operators, denoted as $L_{n, ψ, ϕ}$ and is defined by \begin{align*} L_{n, ψ, ϕ}:=\sum_{k=1}^{n}c_kD_{k, ψ_k, ϕ},\; \mbox{where }\; c_k\in\mathbb ...
Ahamed, Molla Basir, Rahman, Taimur
openaire   +2 more sources

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

open access: yesFEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point   +7 more
wiley   +1 more source

Isometries and spectra of multiplication operators on the Bloch space

open access: yes, 2008
In this paper, we establish bounds on the norm of multiplication operators on the Bloch space of the unit disk via weighted composition operators. In doing so, we characterize the isometric multiplication operators to be precisely those induced by ...
Allen, Robert F., Colonna, Flavia
core  

Multi‐omics and low‐input proteomics profiling reveals dynamic regulation driving pluripotency initiation in early mouse embryos

open access: yesFEBS Open Bio, EarlyView.
Mouse pre‐implantation development involves a transition from totipotency to pluripotency. Integrating transcriptomics, epigenetic profiling, low‐input proteomics and functional assays, we show that eight‐cell embryos retain residual totipotency features, whereas cytoskeletal remodeling regulated by the ubiquitin‐proteasome system drives progression ...
Wanqiong Li   +8 more
wiley   +1 more source

Hyperexpansive weighted composition operators

open access: yes, 2013
In this note unbounded hyperexpansive weighted composition operators are investigated. AS a consequence unbounded hyperexpansive multiplication and composition operators are characterized.
openaire   +2 more sources

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