Results 1 to 10 of about 4,581,421 (248)

Positive Solutions for Resonant (p, q)-equations with convection

open access: yesAdvances in Nonlinear Analysis, 2020
We consider a nonlinear parametric Dirichlet problem driven by the (p, q)-Laplacian (double phase problem) with a reaction exhibiting the competing effects of three different terms. A parametric one consisting of the sum of a singular term and of a drift
Liu Zhenhai, Papageorgiou Nikolaos S.
doaj   +1 more source

Singular anisotropic equations with a sign-changing perturbation

open access: yesNonlinear Analysis, 2023
We consider an anisotropic Dirichlet problem driven by the variable (p, q)-Laplacian (double phase problem). In the reaction, we have the competing effects of a singular term and of a superlinear perturbation. Contrary to most of the previous papers, we
Zhenhai Liu, Nikolaos S. Papageorgiou
doaj   +1 more source

Results for Twin Singular Nonlinear Problems with Damping Term

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
By using the functional type cone expansion and compression fixed-point theorem in cones, some new and general results on the existence of positive solution for twin singular boundary value problems with damping term are obtained.
Youwei Zhang
doaj   +1 more source

Existence of Solutions for the p(x)-Laplacian Problem with Singular Term

open access: yesBoundary Value Problems, 2010
We study the following p(x)-Laplacian problem with singular term: -div⁡(|∇u|p(x)-2∇u)+|u|p(x)-2u=λ|u|α(x)-2u+f(x,u), x∈Ω, u=0, x∈∂Ω, where Ω⊂RN is a bounded ...
Fu Yongqiang, Yu Mei
doaj   +1 more source

Entanglement entropy of singular surfaces under relevant deformations in holography

open access: yesJournal of High Energy Physics, 2018
In the vacuum state of a CFT, the entanglement entropy of singular surfaces contains a logarithmic universal term which is only due to the singularity of the entangling surface.
Mostafa Ghasemi, Shahrokh Parvizi
doaj   +1 more source

On singular double phase problem with variable exponents and convolution term

open access: yesOpen Mathematics
In this article, we consider the following singular double phase problem with variable exponents and convolution term of the form: −Tp(x),q(x)α(x)(u)=λs(x)u−γ(x)+∫Ω|u(x)|h(x)|x−y|μ(x,y)|u(y)|h(x)−2u(y)inΩ,u=0on∂Ω, $$\begin{cases}-{\mathcal{T}}_{p\left(x ...
He Rui, Liang Sihua
doaj   +1 more source

The Moving Plane Method for Doubly Singular Elliptic Equations Involving a First-Order Term

open access: yesAdvanced Nonlinear Studies, 2021
In this paper we deal with positive singular solutions to semilinear elliptic problems involving a first-order term and a singular nonlinearity. Exploiting a fine adaptation of the well-known moving plane method of Alexandrov–Serrin and a careful choice ...
Esposito Francesco, Sciunzi Berardino
doaj   +1 more source

The second term of the asymptotics of the monodromy map in case of two even edges of the Newton diagram

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2000
The second term of the asymptotics of the monodromy map of monodromic singular point for some class of vector fields, Newton diagram of which consists of two even edges is computed; in that case the principal term of the asymptotics is an identity ...
N. Medvedeva, E. Batcheva
doaj   +1 more source

Existence of positive solutions for singular p-Laplacian Hadamard fractional differential equations with the derivative term contained in the nonlinear term

open access: yesNonlinear Analysis, 2023
In this paper, based on the properties of Green function and the eigenvalue of a corresponding linear operator, the existence of positive solutions is investigated by spectral analysis for a infinite-points singular p-Laplacian Hadamard fractional ...
Limin Guo   +4 more
doaj   +1 more source

USING THE METHODS OF WAVELET ANALYSIS AND SINGULAR SPECTRUM ANALYSIS IN THE STUDY OF RADIO SOURCE BL LAC

open access: yesOdessa Astronomical Publications, 2014
We investigated the monitoring data of extragalactic source BL Lac. This monitoring was held withUniversityofMichigan26-meter radio  telescope. To study flux density of extragalactic source BL Lac at frequencies of 14.5, 8 and 4.8 GHz, the wavelet ...
G. I. Donskykh   +3 more
doaj   +1 more source

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