Articles with "positive radial" as a keyword



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Multiple positive radial solutions for Neumann elliptic systems with gradient dependence

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Published in 2017 at "Mathematical Methods in The Applied Sciences"

DOI: 10.1002/mma.5143

Abstract: We provide new results on the existence, non-existence and multiplicity of non-negative radial solutions for semilinear elliptic systems with Neumann boundary conditions on an annulus. Our approach is topological and relies on the classical fixed… read more here.

Keywords: neumann elliptic; solutions neumann; multiple positive; positive radial ... See more keywords

Uniqueness of positive radial solutions of superlinear elliptic equations in annuli

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Published in 2021 at "Journal of Differential Equations"

DOI: 10.1016/j.jde.2021.02.047

Abstract: Abstract We present a generalized comparison identity for a two point boundary value problem, and we apply it to show the uniqueness of positive radial solutions of { Δ u ( x ) + f… read more here.

Keywords: radial solutions; uniqueness positive; positive radial; solutions superlinear ... See more keywords
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Nonconstant positive radial solutions for Neumann problem involving the mean extrinsic curvature operator

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Published in 2020 at "Journal of Mathematical Analysis and Applications"

DOI: 10.1016/j.jmaa.2019.123728

Abstract: Abstract Let B be the unit ball in R N with N ≥ 2 . Let f ∈ C 1 ( [ 0 , ∞ ) , R ) , f ( 0 ) =… read more here.

Keywords: nonconstant positive; solutions neumann; neumann problem; positive radial ... See more keywords

Positive Radial Symmetric Solutions of Nonlinear Biharmonic Equations in an Annulus

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Published in 2024 at "Symmetry"

DOI: 10.3390/sym16070793

Abstract: This paper discusses the existence of positive radial symmetric solutions of the nonlinear biharmonic equation ▵2u=f(u,▵u) on an annular domain Ω in RN with the Navier boundary conditions u|∂Ω=0 and ▵u|∂Ω=0, where f:R+×R−→R+ is a… read more here.

Keywords: solutions nonlinear; symmetric solutions; radial symmetric; nonlinear biharmonic ... See more keywords