Average linking numbers
Average linking numbers
复制标题
平均链接数
DOI:
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发表时间:
1999
影响因子:
0.9
通讯作者:
R. Iturriaga
中科院分区:
文献类型:
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作者:
G. Contreras;R. Iturriaga
We prove the existence of the average linking number, also called the Hopf invariant, for any invariant measure under a differentiable flow on $S^3$ without singularities, which has no periodic orbit of positive measure.