Results 71 to 80 of about 4,389,123 (370)

Isometric and Closed-Range Composition Operators between Bloch-Type Spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
We present an overview of the known results describing the isometric and closed-range composition operators on different types of holomorphic function spaces.
Nina Zorboska
doaj   +1 more source

The weighted composition operators on the large weighted Bergman spaces

open access: yes, 2018
In this paper, we characterize bounded, compact or Schatten class weighted composition operators acting on Bergman spaces with the exponential type weights. Moreover, we give the proof of the necessary part for the boundedness of composition operators on
Park, Inyoung
core   +1 more source

Plasma lipidomic and metabolomic profiles in high‐grade glioma patients before and after 72‐h presurgery water‐only fasting

open access: yesMolecular Oncology, EarlyView.
Presurgery 72‐h fasting in GB patients leads to adaptations of plasma lipids and polar metabolites. Fasting reduces lysophosphatidylcholines and increases free fatty acids, shifts triglycerides toward long‐chain TGs and increases branched‐chain amino acids, alpha aminobutyric acid, and uric acid.
Iris Divé   +7 more
wiley   +1 more source

Compact Weighted Composition Operators and Multiplication Operators between Hardy Spaces

open access: yesAbstract and Applied Analysis, 2008
We estimate the essential norm of a compact weighted composition operator 𝑢𝐶𝜑 acting between different Hardy spaces of the unit ball in ℂ𝑁. Also we will discuss a compact multiplication operator between Hardy spaces.
Sei-Ichiro Ueki, Luo Luo
doaj   +1 more source

Invertible and normal composition operators on the Hilbert Hardy space of a half–plane

open access: yesConcrete Operators, 2016
Operators on function spaces of form Cɸf = f ∘ ɸ, where ɸ is a fixed map are called composition operators with symbol ɸ. We study such operators acting on the Hilbert Hardy space over the right half-plane and characterize the situations when they are ...
Matache Valentin
doaj   +1 more source

Generalized weighted composition operators on Bloch-type spaces

open access: yesJournal of Inequalities and Applications, 2015
In this paper, we give three different characterizations for the boundedness and compactness of generalized weighted composition operators on Bloch-type spaces, especially we characterize them in terms of the sequence of Bloch-type norms of the ...
Xiangling Zhu
semanticscholar   +1 more source

Strongly omnipresent operators: general conditions and applications to composition operators [PDF]

open access: yes, 2002
This paper studies the concept of strongly omnipresent operators that was recently introduced by the first two authors. An operator T on the space H(G) of holomorphic functions on a complex domain G is called strongly omnipresent whenever the set of T ...
Bernal González, Luis   +2 more
core  

Compact composition operators [PDF]

open access: yesJournal of the Australian Mathematical Society, 1979
AbstractLet (Хζ,λ) be a σ-finite measure space, and let ϕ be a non-singular measurable transformation from X into itself. Then a composition transformation Cϕ on L2(λ) is defined by Cϕf = f ∘ ϕ. If Cϕ is a bounded operator, then it is called a composition operator.
Ashok Kumar, R.K. Singh
openaire   +1 more source

Targeting the MDM2‐MDM4 interaction interface reveals an otherwise therapeutically active wild‐type p53 in colorectal cancer

open access: yesMolecular Oncology, EarlyView.
This study investigates an alternative approach to reactivating the oncosuppressor p53 in cancer. A short peptide targeting the association of the two p53 inhibitors, MDM2 and MDM4, induces an otherwise therapeutically active p53 with unique features that promote cell death and potentially reduce toxicity towards proliferating nontumor cells.
Sonia Valentini   +10 more
wiley   +1 more source

Volterra Type Integral Operators and Composition Operators on Model Spaces

open access: yesJournal of Function Spaces, 2015
We study some mapping properties of Volterra type integral operators and composition operators on model spaces. We also discuss and give out a couple of interesting open problems in model spaces where any possible solution of the problems can be used to ...
Tesfa Mengestie
doaj   +1 more source

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