Llarull's theorem on odd dimensional manifolds: the noncompact case
arxiv(2024)
摘要
Let (M,g^TM) be an odd dimensional (M≥ 3) connected oriented
noncompact complete spin Riemannian manifold. Let k^TM be the associated
scalar curvature. Let f:M→ S^ M(1) be a smooth area decreasing map
which is locally constant near infinity and of nonzero degree. Suppose
k^TM≥ ( M)( M-1) on the support of df, we show that
inf(k^TM)<0. This answers a question of Gromov.
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