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arXiv 1111.5958math.DG
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单模六维可解李代数的上同调性质

Cohomological properties of unimodular six dimensional solvable Lie algebras

Maura Macrì

摘要:

本文研究了六维可解李代数,重点研究了具有辛结构的六维可解李代数。我们列出所有的辛结构,他们承认,我们计算他们的贝蒂数发现一些性质的余维数的零根。其次,我们考虑关文元关于辛可解流形的幂零阶的猜想,发现它对所有六维幺模可解李代数都成立。最后,我们考虑一些上同调的辛流形介绍了Tseng和丘辛Hogde理论的背景下,我们用它们来确定一些六维solvmanifold的硬Lefschetz性质。

英文摘要:

In the present paper we study six dimensional solvable Lie algebras with special emphasis on those admitting a symplectic structure. We list all the symplectic structures that they admit and we compute their Betti numbers finding some properties about the codimension of the nilradical. Next, we consider the conjecture of Guan about step of nilpotency of a symplectic solvmanifold finding that it is true for all six dimensional unimodular solvable Lie algebras. Finally, we consider some cohomologies for symplectic manifolds introduced by Tseng and Yau in the context of symplectic Hogde theory and we use them to determine some six dimensional solvmanifolds for which the Hard Lefschetz property holds.

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