Results 131 to 140 of about 741,288 (282)

Hyperexpansive weighted composition operators [PDF]

arXiv, 2013
In this note unbounded hyperexpansive weighted composition operators are investigated. AS a consequence unbounded hyperexpansive multiplication and composition operators are characterized.
arxiv  

Semigroups of composition operators in Bergman spaces [PDF]

, 1987
Aristomenis G. Siskakis
openalex   +1 more source

Protein O‐glycosylation in the Bacteroidota phylum

FEBS Open Bio, EarlyView.
Species of the Bacteroidota phylum exhibit a unique O‐glycosylation system. It modifies noncytoplasmic proteins on a specific amino acid motif with a shared glycan core but a species‐specific outer glycan. A locus of multiple glycosyltransferases responsible for the synthesis of the outer glycan has been identified.
Lonneke Hoffmanns, Dennis Svedberg, André Mateus   +2 more
wiley   +1 more source

Compact Composition Operators on Spaces of Boundary-Regular Holomorphic Functions [PDF]

, 1987
Joel H. Shapiro
openalex   +1 more source

Matrigel inhibits elongation and drives endoderm differentiation in aggregates of mouse embryonic stem cells

FEBS Open Bio, EarlyView.
Stem cell‐based embryo models (SCBEMs) are valuable to study early developmental milestones. Matrigel, a basement membrane matrix, is a critical substrate used in various SCBEM protocols, but its role in driving stem cell lineage commitment is not clearly defined.
Atoosa Amel, Rachel Brown, Alexa Rabeling, Mubeen Goolam   +3 more
wiley   +1 more source

Bounded Composition Operators on Hilbert Space of Complex-Valued Harmonic Functions [PDF]

arXiv
In this paper, we study composition operators on Hilbert space of complex-valued harmonic functions. In particular, we explore isometries, the type of self-map that generate bounded composition operator, and characterize the boundedness of composition operator in terms of Poisson integral.
arxiv  

Compact and Weakly Compact Composition Operators on Spaces of Vector Valued Continuous Functions [PDF]

, 1987
R. K. Singh, W. H. Summers
openalex   +1 more source

Neurotoxic amyloid β‐peptide and tau produce cytokine‐like effects on PMCA in glioblastoma cell lines, enhancing its activity and isoforms expression

FEBS Open Bio, EarlyView.
Two biomarkers of Alzheimer's disease, amyloid β‐peptide (Aβ) and tau, induce the transformation of U‐251 and other glioblastoma cell lines into neurotoxic A1‐like reactive astrocytes. This transformation is produced by cytokines and is followed by upregulation of PMCA activity and isoform expression, and is closely associated with inflammation, as ...
María Berrocal, Alberto Alvarez‐Barrientos, Ana M. Mata   +2 more
wiley   +1 more source

A Review on Classes of Composition Operators

پژوهش‌های ریاضی, 2020
Introduction In 1976, A. Lambert characterized subnormal weighted shifts. Then he studied hyponormal weighted composition operators on  in 1986 and in 1988 subnormal composition operators studied again by him. Recently, A. Lambert, et al., have published
Mohammadreza Azimi
doaj  

Isolation amongst the composition operators [PDF]

, 1990
Joel H. Shapiro, Carl Johan Sundberg
openalex   +1 more source