Results 1 to 10 of about 257 (144)

Compact Operators on the Bergman Spaces with Variable Exponents on the Unit Disc of C

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2018
We study the compactness of some classes of bounded operators on the Bergman space with variable exponent. We show that via extrapolation, some results on boundedness of the Toeplitz operators with general L1 symbols and compactness of bounded operators ...
Dieudonne Agbor
doaj   +1 more source

Positive Toeplitz operators between doubling Fock spaces

open access: yes四川大学学报. 自然科学版, 2020
In this paper, we characterize the boundedness and compactness of the Toeplitz operator between doubling Fock spaces in terms of averaging functions and t-Berezin transform.
JIAN Shu-Man, WANG Xiao-Feng, XIA Jin
doaj  

On the closed range problem for composition operators on the Dirichlet space

open access: yesConcrete Operators, 2019
We characterize closed range composition operators on the Dirichlet space for a particular class of composition symbols. The characterization relies on a result about Fredholm Toeplitz operators with BMO1 symbols, and with Berezin transforms of vanishing
Zorboska Nina
doaj   +1 more source

Association of Prodromal Parkinson's Disease‐Like Features in Long COVID With Dream‐Enactment Behaviours

open access: yesJournal of Sleep Research, EarlyView.
ABSTRACT Emerging evidence links COVID‐19 to the predisposition of Parkinson's disease (PD). However, the relationship between long COVID and prodromal PD‐like features remains unclear, particularly in long COVID participants with dream‐enactment behaviours (DEBs) that may be suggestive of possible REM sleep behaviour disorder.
Siyi Gong   +28 more
wiley   +1 more source

Hyperbolic harmonic functions and the associated integral equations

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2015
In this paper we consider a class of integral equations associated with the invariant mean value property of hyperbolic harmonic functions. We have shown that nonconstant solutions of these integral equations are functions of unbounded variations and do ...
Das Namita, Lal Rajendra Prasad
doaj   +1 more source

From Populism to Fascism? On Our Present‐Time Political Categories

open access: yesSociology Lens, Volume 39, Issue 2, Page 240-248, June 2026.
ABSTRACT With the global rise of far‐right governments, two categories are available to describe this aspect of our current times: populism and fascism. This raises a twofold question: analytically, which is the most accurate to describe these authoritarian governments?
Federico Tarragoni
wiley   +1 more source

$m$-Berezin transform and compact operators

open access: yesRevista Matemática Iberoamericana, 2006
m -Berezin transforms are introduced for bounded operators on the Bergman space of the unit ball. The norm of the m -Berezin transform as a linear operator from the space of bounded ...
Nam , Kyesook   +2 more
openaire   +3 more sources

Semiclassical inequalities for Dirichlet and Neumann Laplacians on convex domains

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 3, Page 762-822, March 2026.
Abstract We are interested in inequalities that bound the Riesz means of the eigenvalues of the Dirichlet and Neumann Laplacians in terms of their semiclassical counterpart. We show that the classical inequalities of Berezin–Li–Yau and Kröger, valid for Riesz exponents γ≥1$\gamma \ge 1$, extend to certain values γ<1$\gamma <1$, provided the underlying ...
Rupert L. Frank, Simon Larson
wiley   +1 more source

Quantitative Mapping of Fibrotic Tissue Mechanics via Brillouin Spectroscopy

open access: yesJournal of Biophotonics, Volume 19, Issue 3, March 2026.
Brillouin spectroscopy distinguishes fibrotic from healthy tissue based on localized stiffness changes and enables real‐time monitoring of dynamic alterations in viscoelastic properties during fibrogenesis.ABSTRACTFibrosis is a pathological scarring process that disrupts tissue architecture, and is characterized by excessive extracellular matrix (ECM ...
Vsevolod Cheburkanov   +3 more
wiley   +1 more source

Participation Beyond Compliance: Who Tried to Influence Other People's Vaccination Behaviour During the COVID‐19 Crisis?

open access: yesSociology of Health &Illness, Volume 48, Issue 3, March 2026.
ABSTRACT In this paper, we call for more attention to be paid to what we call ordinary contributions to public health policies: the propensity of ordinary citizens to actively influence others to follow or reject a health policy. Shifting the focus from personal compliance to active participation (i.e., ordinary contribution) raises distinct questions ...
Hugo Touzet   +2 more
wiley   +1 more source

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