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ISSN 1088-6826(online) ISSN 0002-9939(print)



A cusp closing theorem

Author: Viktor Schroeder
Journal: Proc. Amer. Math. Soc. 106 (1989), 797-802
MSC: Primary 53C20; Secondary 53C22, 58F17
MathSciNet review: 957267
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Abstract: Using a modification of a cusp closing result of Thurston, we construct compact Riemannian manifolds of nonpositive sectional curvature which have rank one (in the sense of Brin, Ballmann, and Eberlein) but which contain embedded flat tori of codimension 2. The metric can even be made analytic.

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Keywords: Nonpositive curvature, rank, analytic Riemannian metric
Article copyright: © Copyright 1989 American Mathematical Society

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