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arXiv 0904.3113math.DG
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切触李群中的格与5维切触解流形

Lattices in contact Lie groups and 5-dimensional contact solvmanifolds

Andre Diatta, Brendan Foreman

摘要:

本文研究了由切触李群一致化的紧切触流形的几何,即,紧流形,是具有左不变切触结构和一致格子群的李群G的商。我们重新审视亚历山大的标准存在格的可解李群和应用它们,以及其他一些众所周知的工具,并使用这些结果来证明,在5维,正好有7个连接和单连接接触李群的一致格,所有这些都是可解的。辛边界的问题进行了探讨,以及。证明了特殊的仿射群没有一致格。

英文摘要:

This paper investigates the geometry of compact contact manifolds that are uniformized by contact Lie groups, i.e., compact manifolds that are the quotient of some Lie group G with a left invariant contact structure and a uniform lattice subgroup. We re-examine Alexander's criteria for existence of lattices on solvable Lie groups and apply them, along with some other well known tools, and use these results to prove that, in dimension 5, there are exactly seven connected and simply connected contact Lie groups with uniform lattices, all of which are solvable. Issues of symplectic boundaries are explored, as well. It is also shown that the special affine group has no uniform lattice.

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