Results 11 to 20 of about 1,349 (111)

On extremals for the Trudinger-Moser inequality with vanishing weight in the N-dimensional unit ball

open access: yes, 2020
In this paper, we study the extremal function for the Trudinger-Moser inequality with vanishing weight in the unit ball B⊂RN (N 3). To be exact, let S be the set of all decreasing radially symmetrical functions and αN = Nω 1/(N−1) N−1 , where ωN−1 is the
Mengjie Zhang
semanticscholar   +1 more source

A Sharp Liouville Theorem for Elliptic Operators [PDF]

open access: yes, 2010
We introduce a new condition on elliptic operators $L= {1/2}\triangle + b \cdot \nabla $ which ensures the validity of the Liouville property for bounded solutions to $Lu=0$ on $\R^d$. Such condition is sharp when $d=1$.
Priola, Enrico, Wang, Feng-Yu
core   +1 more source

Diagonalized Chebyshev Rational Spectral Methods for Second-Order Elliptic Problems on Unbounded Domains

open access: yesNumerical Mathematics: Theory, Methods and Applications, 2019
Diagonalized Chebyshev rational spectral methods for solving second-order elliptic problems on the half/whole line are proposed. Some Sobolev bi-orthogonal rational basis functions are constructed which lead to the diagonalization of discrete systems ...
Yanmin Ren
semanticscholar   +1 more source

Trace Hardy--Sobolev--Mazy'a inequalities for the half fractional Laplacian [PDF]

open access: yes, 2014
In this work we establish trace Hardy-Sobolev-Maz'ya inequalities with best Hardy constants, for weakly mean convex domains. We accomplish this by obtaining a new weighted Hardy type estimate which is of independent inerest. We then produce Hardy-Sobolev-
Filippas, Stathis   +2 more
core   +2 more sources

Existence results of infinitely many weak solutions of a singular subelliptic system on the Heisenberg group

open access: yesActa Universitatis Sapientiae: Mathematica, 2022
This article shows the existence and multiplicity of weak solutions for the singular subelliptic system on the Heisenberg group {-Δℍnu+a(ξ)u(|z|4+t2)12=λFu(ξ,u,v)in   Ω,-Δℍnv+b(ξ)v(|z|4+t2)12=λFv(ξ,u,v)in   Ω,u=v=0on  ∂Ω.\left\{ {\matrix{ { - {\Delta _{
Heidari S., Razani A.
doaj   +1 more source

On the best constant of Hardy-Sobolev Inequalities [PDF]

open access: yes, 2009
We obtain the sharp constant for the Hardy-Sobolev inequality involving the distance to the origin. This inequality is equivalent to a limiting Caffarelli-Kohn-Nirenberg inequality.
Adimurthi   +2 more
core   +2 more sources

Existence and Concentration of Solutions for Choquard Equations with Steep Potential Well and Doubly Critical Exponents

open access: yesAdvanced Nonlinear Studies, 2021
In this paper, we investigate the non-autonomous Choquard ...
Li Yong-Yong, Li Gui-Dong, Tang Chun-Lei
doaj   +1 more source

Regularizing Effect of Two Hypotheses on the Interplay Between Coefficients in Some Hamilton–Jacobi Equations

open access: yesAdvanced Nonlinear Studies, 2021
We study of the regularizing effect of the interaction between the coefficient of the zero-order term and the lower-order term in quasilinear Dirichlet problems whose model ...
Arcoya David, Boccardo Lucio
doaj   +1 more source

Decay of covariances, uniqueness of ergodic component and scaling limit for a class of $\nabla\phi$ systems with non-convex potential [PDF]

open access: yes, 2008
We consider a gradient interface model on the lattice with interaction potential which is a nonconvex perturbation of a convex potential. Using a technique which decouples the neighboring vertices sites into even and odd vertices, we show for a class of ...
Codina Cotar, J. Deuschel
semanticscholar   +1 more source

Gap localization of TE‐modes by arbitrarily weak defects

open access: yesJournal of the London Mathematical Society, Volume 95, Issue 3, Page 942-962, June 2017., 2017
Abstract This paper considers the propagation of TE‐modes in photonic crystal waveguides. The waveguide is created by introducing a linear defect into a periodic background medium. Both the periodic background problem and the perturbed problem are modelled by a divergence type equation.
B. M. Brown   +4 more
wiley   +1 more source

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