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Structure of flat subspaces in low-dimensional manifolds of nonpositive curvature |
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| Authors: | Viktor Schroeder |
| Institution: | (1) Mathematisches Institut der Universität, Einsteinstr. 62, D-4400 Münster, Fed. Rep. of Germany |
| Abstract: | The complete structure of flat subspaces is determined for compact real analytic 3 or 4-dimensional manifolds of nonpositive sectional curvature. In particular we show that this structure is determined by the fundamental group. |
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