Results 61 to 70 of about 4,854,913 (333)

Commuting Toeplitz operators and H-Toeplitz operators on Bergman space

open access: yesAIMS Mathematics
In this paper, we consider the H-Toeplitz and Toeplitz operators acting on the Bergman space. First, we describe the characterizations of commutativity of two H-Toeplitz operators with certain harmonic symbols.
Qian Ding
doaj   +1 more source

On weighted harmonic Bergman spaces

open access: yesDemonstratio Mathematica, 2008
AbstractThis paper is devoted to the investigation of the weighted Bergman harmonic ...
openaire   +1 more source

\(\alpha\)-parabolic Bergman spaces

open access: yes, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nishio, Masaharu   +2 more
openaire   +3 more sources

Direct Ambient Mass Spectrometry for Food, Beverage, and Agricultural Sample Analysis and Research

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Ambient and direct mass spectrometry (MS) methods are becoming increasingly used for the rapid analysis of food, beverage and agricultural samples. Novel ionization approaches combined with targeted, or untargeted workflows provide analytical outcomes within a greatly reduced time period compared to traditional separation science coupled with ...
Leigh M. Schmidtke   +3 more
wiley   +1 more source

Duality of the Nonreflexive Bergman Space of the Upper Half Plane and Composition Groups

open access: yesEuropean Journal of Mathematical Analysis
We identify the predual of the nonreflexive Bergman space of the upper half plane with the little Bloch space of the upper half plane consisting of those functions vanishing at point i.
E. O. Gori, J. O. Bonyo
doaj   +1 more source

A Derivative Hilbert operator acting from Bergman spaces to Hardy spaces

open access: yesAIMS Mathematics, 2023
Let $ \mu $ be a positive Borel measure on the interval $ [0, 1) $. The Hankel matrix $ \mathcal{H}_{\mu} = (\mu_{n, k})_{n, k\geq 0} $ with entries $ \mu_{n, k} = \mu_{n+k} $, where $ \mu_{n} = \int_{[0, 1)}t^nd\mu(t) $, formally induces the operator as
Yun Xu, Shanli Ye
doaj   +1 more source

Fly pollinator foraging in boreal forests is shaped by climate, forest structure and flower resources

open access: yesOikos, EarlyView.
Most insect pollinators are ectothermic and rely on external heat sources for temperature regulation. Forests, with their diverse canopy structures and sunlight penetration levels, create a mosaic of microclimates influencing these insects' behaviour.
Joan Díaz‐Calafat   +6 more
wiley   +1 more source

Weighted Iterated Radial Composition Operators between Some Spaces of Holomorphic Functions on the Unit Ball

open access: yesAbstract and Applied Analysis, 2010
The boundedness and compactness of weighted iterated radial composition operators from the mixed-norm space to the weighted-type space and the little weighted-type space on the unit ball are characterized here.
Stevo Stević
doaj   +1 more source

Assessing the Physical Habitat Condition of Navigable Canals and Rivers in England

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Monitoring can identify environmental problems and help to set environmental objectives, design management interventions, and assess environmental responses. The need to monitor rivers for such purposes has long been emphasized, but canals have received less attention.
Angela Gurnell   +3 more
wiley   +1 more source

Strategic Design of Public Food Procurement to Leverage Positive Food Systems Outcomes: A Framework of Actions

open access: yesSustainable Development, EarlyView.
ABSTRACT There is substantial potential for the procurement of food by public institutions to contribute to Sustainable Development across multiple environmental, social, and economic outcomes. In this study we used theories of policy instrumentation and learning to analyse global guidance for designing public food procurement instruments to leverage ...
Erica Reeve   +7 more
wiley   +1 more source

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