A systolic inequality for geodesic flows on the two-sphere
A systolic inequality for geodesic flows on the two-sphere
复制标题
二球体上测地线流动的收缩不等式
DOI:
10.1007/s00208-016-1385-2
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发表时间:
2017
影响因子:
1.4
通讯作者:
P. Salomão
中科院分区:
文献类型:
--
作者:
A. Abbondandolo;B. Bramham;U. Hryniewicz;P. Salomão
For a Riemannian metricgon the two-sphere, letbe the length of the shortest closed geodesic andbe the length of the longest simple closed geodesic. We prove that if the curvature ofgis positive and sufficiently pinched, then the sharp systolic inequalities $$\begin{aligned} \ell _\mathrm{min}(g)^2 \le \pi \ \mathrm{Area}(S^2,g) \le \ell _{\max }(g)^2, \end{aligned}$$hold, and each of these two inequalities is an equality if and only if the metricgis Zoll. The first inequality answers positively a conjecture of Babenko and Balacheff. The proof combines arguments from Riemannian and symplectic geometry.
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DOI:
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发表时间:
2006
期刊:
影响因子:
--
作者:
Florent Balacheff
通讯作者:
Florent Balacheff
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
F. Balacheff
通讯作者:
F. Balacheff
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
S. Sabourau
通讯作者:
S. Sabourau
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
E. Calabi;Jiansheng Cao
通讯作者:
Jiansheng Cao
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
R. Rotman
通讯作者:
R. Rotman