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Multiplicity of Nodal Solutions for Yamabe Type Equations Fernández, Juan Carlos
Description
Given a compact Riemannian manifold $(M, g)$ without boundary of dimension $m\geq 3$ and under some symmetry assumptions, we establish existence and multiplicity of positive and sign changing solutions to the following Yamabe type equation $$ div g(a\nabla u) + bu = c|u|^{2*-2} u \quad\text{on } M $$ where $\div g$ denotes the divergence operator on $(M; g)$,$ a, b$ and $c$ are smooth functions with $a$ and $c$ positive, and $2*=\frac{2m}{m-2}$ denotes the critical Sobolev exponent. In particular, if $R_g$ denotes the scalar curvature, we give some examples where the Yamabe equation $$ -\frac{4(m-1)}{m-2}\Delta_g u+R_g u = \kappa u^{2*-2}\quad\text{on } M. $$ admits an infinite number of sign changing solutions. We also study the lack of compactness of these problems in a symmetric setting and how the symmetries restore it at some energy levels. This allows us to use a suitable variational principle to show the existence and multiplicity of such solutions. This is joint work with Monica Clapp.
Item Metadata
Title |
Multiplicity of Nodal Solutions for Yamabe Type Equations
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Creator | |
Publisher |
Banff International Research Station for Mathematical Innovation and Discovery
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Date Issued |
2016-09-27T16:50
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Description |
Given a compact Riemannian manifold $(M, g)$ without boundary of dimension $m\geq 3$ and under some symmetry assumptions, we establish existence and multiplicity of positive and sign changing solutions to the following Yamabe type equation
$$
div g(a\nabla u) + bu = c|u|^{2*-2} u \quad\text{on } M
$$
where $\div g$ denotes the divergence operator on $(M; g)$,$ a, b$ and $c$ are smooth functions with $a$ and $c$ positive, and $2*=\frac{2m}{m-2}$ denotes the critical Sobolev exponent. In particular, if $R_g$ denotes the scalar curvature, we give some examples where the Yamabe equation
$$
-\frac{4(m-1)}{m-2}\Delta_g u+R_g u = \kappa u^{2*-2}\quad\text{on } M.
$$
admits an infinite number of sign changing solutions. We also study the lack of compactness of these problems in a symmetric setting and how the symmetries restore it at some energy levels. This allows us to use a suitable variational principle to show the existence and multiplicity of such solutions. This is joint work with Monica Clapp.
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Extent |
38 minutes
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Subject | |
Type | |
File Format |
video/mp4
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Language |
eng
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Notes |
Author affiliation: Universidad Nacional Autonoma de Mexico
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Series | |
Date Available |
2017-03-29
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0343386
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International