Results 31 to 40 of about 4,903,780 (58)

A result on positive matrices and applications to Hankel operators

, 2011
Let S denote the shift operator on l2(N) and set e0 = (1,0,0, . . .) . A special case of the main result says that if W is a self-adjoint operator on l2(N) such that W(e0) = 0 and S∗WS W , then W 0 .
M. Carlsson
semanticscholar   +1 more source

The weighted composition operators on the large weighted Bergman spaces

, 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

Toeplitz operators on Bergman spaces of polyanalytic functions

, 2010
We study algebraic properties of Toeplitz operators on Bergman spaces of polyanalytic functions on the unit disk. We obtain results on finite-rank commutators and semi-commutators of Toeplitz operators with harmonic symbols.
Cuckovic, Zeljko, Le, Trieu
core   +1 more source

Norm of the Bergman projection onto the Bloch space with $\mathcal{M}-$invariant gradient

, 2018
The value of the operator norm of Bergman projections from $L^{\infty}(\mathbb{B}^n)$ to Bloch space is found in \cite{KalajMarkovic2014}. The authors of mentioned paper proposed the problem of calculating the norm of the same class of operators with ...
Melentijević, Petar
core   +1 more source

Wiener-Hopf operators in higher dimensions: the Widom conjecture for piece-wise smooth domains

, 2014
We prove a two-term quasi-classical trace asymptotic formula for the functions of multi-dimensional Wiener-Hopf operators with discontinuous symbols. The discontinuities occur on the surfaces which are assumed to be piece-wise smooth.
Sobolev, A. V.
core   +1 more source

The Bergman Shift Operator on Polynomial Lemniscates

, 2014
We investigate the relationship between the Bergman shift operator and the support of the corresponding measure. We pay special attention to the situation when the measure of orthogonality is concentrated on a polynomial lemniscate.
Simanek, Brian
core   +1 more source

On a family of integral operators of Hankel type [PDF]

, 2012
In this paper we perform an explicit diagonalization of Hankel integral operators $ K^{(0)}, K^{(1)}, K^{(2)}, ... $ It turns out that each of these operators has a simple purely absolutely continuous spectrum filling in the interval $ [-1,1] $.
Uebersohn, Christoph
core  

Factors contributing to the variation in antibiotic prescribing among primary health care physicians: a systematic review

BMC Primary Care
Antibiotic resistance is growing globally. The practice of health professionals when prescribing antibiotics in primary health care settings significantly impacts antibiotic resistance.
G. Kasse, Judy Humphries, Suzanne M. Cosh, Md Shahidul Islam   +3 more
semanticscholar   +1 more source

Navigating the doctor-patient-AI relationship - a mixed-methods study of physician attitudes toward artificial intelligence in primary care

BMC Primary Care
Artificial intelligence (AI) is a rapidly advancing field that is beginning to enter the practice of medicine. Primary care is a cornerstone of medicine and deals with challenges such as physician shortage and burnout which impact patient care.
Matthew R. Allen, Sophie Webb, Ammar Mandvi, Marshall Frieden, Ming Tai-Seale, Gene Kallenberg   +5 more
semanticscholar   +1 more source

Barriers and strategies for primary health care workforce development: synthesis of evidence

BMC Primary Care
Having a sufficient and well-functioning health workforce is crucial for reducing the burden of disease and premature death. Health workforce development, focusing on availability, recruitment, retention, and education, is inseparable from acceptability,
A. Endalamaw, R. Khatri, Daniel Erku, Anteneh Zewdie, E. Wolka, Frehiwot Nigatu, Yibeltal Assefa   +6 more
semanticscholar   +1 more source