Results 141 to 150 of about 5,107,062 (367)

Best approximations for the weighted combination of the Cauchy-Szegö kernel and its derivative in the mean

open access: yesResearches in Mathematics
In this paper, we study an extremal problem involving best approximation in the Hardy space $H^1$ on the unit disk $\mathbb D$. Specifically, we consider weighted combinations of the Cauchy-Szegö kernel and its derivative, parameterized by an inner ...
V.V. Savchuk, M.V. Savchuk
doaj   +1 more source

Accounting for functional diversity in biodiversity protection measures

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Globally, countries are becoming increasingly committed to conserving biodiversity. Traditional methods of measuring biodiversity are simple and might miss out on capturing some of the more important functional features that comprise ecosystems. We compare a real‐world conservation program with background vegetation data to explore whether these ...
Joshua S. Lee   +3 more
wiley   +1 more source

Hardy space of Clausen's and Goursat's hypergeometric functions [PDF]

open access: yesSurveys in Mathematics and its Applications
Let ℛ denote the class of analytic functions defined in the open unit disc Δ=\z∈ ℂ: |z|
Jocelyn Johnson, S. Sunil Varma
doaj  

On a new generalization of a Perov-type F-contraction with application to a semilinear operator system

open access: yesFixed Point Theory and Algorithms for Sciences and Engineering
This manuscript aims to present new results about the generalized F-contraction of Hardy–Rogers-type mappings in a complete vector-valued metric space, and to demonstrate the fixed-point theorems for single and pairs of generalized F-contractions of ...
Muhammad Sarwar   +4 more
doaj   +1 more source

Detecting extirpation: A localized approach to a global problem

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The global biodiversity crisis stems from a cascading series of extirpations driving species toward extinction. Addressing this crisis requires methods for early detection of extinction at local scales, where communities can mobilize conservation efforts.
Andrew D. F. Simon   +4 more
wiley   +1 more source

Connection of two nonlinear differential equations with a two-dimensional Hardy operator in weighted Lebesgue spaces with mixed norms

open access: yesElectronic Journal of Differential Equations, 2016
In this article we study a connection between two nonlinear differential equations with a two-dimensional Hardy operator in weighted Lebesgue spaces with mixed norm.
Rovshan A. Bandaliyev
doaj  

Genomic structure and ex situ conservation of the North American grapevine Vitis labrusca

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The North American wild grapevine species Vitis labrusca is an important source of disease resistance and climate resilience traits for breeding new grapevine cultivars. To ensure its continued use in breeding, V. labrusca must be accurately identified and genetically diverse material must be conserved.
Zoë Migicovsky   +18 more
wiley   +1 more source

Quantifying aboveground herbaceous biomass in grassy ecosystems: a comparison of field and high‐resolution UAV‐LiDAR approaches

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
The abundance of herbaceous vegetation in grassy ecosystems—which cover >25% of the world's land surface—is highly variable and impacts key ecological processes including carbon sequestration and support for grazing wildlife and livestock. Here, we present a method for using high‐resolution, UAV‐borne Light Detection and Ranging (LiDAR) to estimate ...
Tyler C. Coverdale   +3 more
wiley   +1 more source

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