Sur la systole de la sphère au voisinage de la métrique standard
Sur la systole de la sphère au voisinage de la métrique standard
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Sur la systole de la spère au voisinage de la métrique standard
DOI:
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
Florent Balacheff
中科院分区:
文献类型:
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作者:
Florent Balacheff
We study the systolic area (defined as the ratio of the area over the square of the systole) of the 2-sphere endowed with a smooth Riemannian metric as a function of this metric. This function, bounded from below by a positive constant over the space of metrics, admits the standard metric g0 as a critical point, although it does not achieve the conjectured global minimum: we show that for each tangent direction to the space of metrics at g0, there exists a variation by metrics corresponding to this direction along which the systolic area can only increase.