Mathematics – Differential Geometry
Scientific paper
1996-01-16
Mathematics
Differential Geometry
27 pages, Plain TeX
Scientific paper
The negative case of the Singular Yamabe Problem concerns the existence and behavior of complete metrics with constant negative scalar curvature on the complement of a closed set in a compact Riemannian manifold which are conformally equivalent to a smooth metric on this compact manifold. When the closed set is a smooth submanifold, it is known by the results of Loewner-Nirenberg and Aviles-McOwen that there exists such a complete metric if and only if $d > (n-2)/2$, and in general the Hausdorff dimension of the set must be at least $(n-2)/2$. In this paper, we show that the existence of such a complete conformal metric with constant negative scalar curvature depends on the tangent structure of the closed set. Specifically, provided the set has a nice tangent cone at a point, we show that when the dimension of this tangent cone is less than $(n-2)/2$ there can not exist such a negative Singular Yamabe metric.
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