Symplectic manifolds and cohomological decomposition

Symplectic manifolds and cohomological decomposition
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DOI:
10.4310/jsg.2014.v12.n2.a1
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发表时间:
2012-11
影响因子:
0.7
通讯作者:
Daniele Angella;A. Tomassini
Daniele Angella;A. Tomassini
中科院分区:
数学3区
文献类型:
--
作者:
Daniele Angella;A. Tomassini

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给定一个闭辛流形,研究sl(2;R)-表示诱导的Lefschetz分解何时产生de Rham上同调的分解.特别地,这对于第二de Rham上同调群总是成立的,或者如果辛流形满足硬莱夫谢茨条件。
Given a closed symplectic manifold, we study when the Lefschetz decomposition induced by the sl(2;R)-representation yields a decomposition of the de Rham cohomology. In particular, this holds always true for the second de Rham cohomology group, or if the symplectic manifold satisfies the Hard Lefschetz Condition.