2009
DOI: 10.1016/j.jmaa.2008.04.059
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Extremal functions for the Caffarelli–Kohn–Nirenberg inequalities: A simple proof of the symmetry

Abstract: In this article, we give a simple proof of the result due to Lin and Wang ensuring the foliated Schwarz symmetry of the extremal functions for the Caffarelli-Kohn-Nirenberg inequalities. This new proof uses a direct and powerful method due to Bartsch, Weth and Willem using polarizations.

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Cited by 6 publications
(5 citation statements)
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“…because we notice that the terms involving k ψ cancel. Hence, using (15) and (16), we have found that…”
Section: Expansion Ofmentioning
confidence: 98%
See 2 more Smart Citations
“…because we notice that the terms involving k ψ cancel. Hence, using (15) and (16), we have found that…”
Section: Expansion Ofmentioning
confidence: 98%
“…L p (C) even if u is not symmetric. We will search for minimizers of Q µ in a restricted class of functions depending only on the variable s (see Section 2.1) along the axis of the cylinder and on the azimuthal angle ζ of the sphere because of the result on Schwarz foliated symmetry of [15]. This guarantees that we are in the right class for minimizers when θ = 1.…”
Section: An Expansion At the Bifurcation Point: Proof Of Theorems 2 Amentioning
confidence: 99%
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“…In this section, we study the pivotal estimates on minimizers of Caffarelli-Kohn-Nirenberg inequality which helps to establish an energy estimate in N − λ,µ , eventually leading us to the existence of second solution in N − λ,µ . It is well known (see [5,8,11] ) that the minimizer of the following minimization problem…”
Section: Existence Of Second Solution In N −mentioning
confidence: 99%
“…Some years later, Costa gave in [53] a new and short proof for inequality (6.1.2) in some particular cases; this proof was based on some definitions of weighted Sobolev spaces and their embbeding into the weighted L 2 -spaces. Bouchez and Willen also gave in [24] a simpler proof for the result of Lin and Wang; their proof relies on the use of polarizations.…”
Section: Introductionmentioning
confidence: 99%