Complete affine locally flat manifolds with a free fundamental group

Complete affine locally flat manifolds with a free fundamental group
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具有自由基本群的完备仿射局部平坦流形

DOI:
10.1007/bf01104978
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发表时间:
1987
期刊:
Journal of Soviet Mathematics
影响因子:
--
通讯作者:
G. Margulis
G. Margulis
中科院分区:
--
文献类型:
--
作者:
G. Margulis

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本文构造了仿射群A(3)的自由非交换子群的例子,这些子群适当地不连续地作用在A(3)上.这些例子反驳了米尔诺尔的一个猜想,即任何完备仿射局部平坦流形的基本群都包含一个有限指数的可解子群。
Examples of free noncommutative subgroups of the affine group A(3), which act properly discontinuously on ℝ3, are constructed in the paper. These examples refute a conjecture of Milnor to the effect that the fundamental group of any complete affine locally flat manifold contains a sòlvable subgroup of finite index.