Results 41 to 50 of about 75,948 (305)

Weighted composition operators between two different weighted sequence spaces

open access: yes, 2022
We give simple criteria which characterize the symbols u, ϕ defining continuous and compact weighted composition operators Wu,ϕ acting between two different weighted sequence spaces.
Sanabria, José E   +2 more
core  

A New Modification of Baskakov–Schurer–Stancu Operators: Weighted and Pointwise Approximation Theories

open access: yesMathematics
The behavior of a new modification of operators of the Baskakov–Schurer–Stancu variant is discussed in this study. First, we establish certain necessary moment and central moment estimates.
Nadire Fulda Odabaşı   +3 more
doaj   +1 more source

Multipliers on weighted Hardy spaces over certain totally disconnected groups

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
In this note, we consider the multipliers on weighted H1 spaces over totally disconnected locally compact abelian groups with a suitable sequence of open compact subgroups (Vilenkin groups).
Toshiyuki Kitada
doaj   +1 more source

Weighthed vector finite element method and its applications [PDF]

open access: yesКомпьютерные исследования и моделирование, 2019
Mathematical models of many natural processes are described by partial differential equations with singular solutions. Classical numerical methods for determination of approximate solution to such problems are inefficient. In the present paper a boundary
Viktor A Rukavishnikov   +1 more
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Full-Completeness in Weighted Spaces [PDF]

open access: yesCanadian Journal of Mathematics, 1970
That the class of fully complete (B-complete) locally convex spaces has an essential role has been well-established (see, e.g., Collins [2], Husain [12], and Pták [16]). However, it is still the case that very little is known concerning full-completeness ...
openaire   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

Weighted Composition Operators from Generalized Weighted Bergman Spaces to Weighted-Type Spaces

open access: yesJournal of Inequalities and Applications, 2008
Let be a holomorphic self-map and let be a holomorphic function on the unit ball . The boundedness and compactness of the weighted composition operator from the generalized weighted Bergman space into a class of weighted-type spaces are studied in
Gu Dinggui
doaj  

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Weighted estimates for Bochner-Riesz operators on Lorentz spaces

open access: yes, 2022
We present new estimates in the setting of weighted Lorentz spaces of operators satisfying a limited Rubio de Francia condition; namely T is bounded on Lp(v) for every v in an strictly smaller class of weights than the Muckenhoupt class Ap.
Carro Rossell, María Jesús   +1 more
core   +1 more source

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