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arXiv 1008.4285math.MG
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椭圆平面上的极小面积二次曲线

Minimal area conics in the elliptic plane

Matthias J. Weber, Hans-Peter Schröcker

摘要:

我们证明了一些唯一性结果的最小面积的二次曲线,封闭一个紧凑的,全维子集的椭圆平面。最小封闭二次曲线是唯一的,如果它的中心或轴是规定的。此外,我们提供了充分条件的封闭集上,保证唯一性没有限制的封闭二次曲线。对于线集的最小封闭二次曲线也得到了类似的结果。

英文摘要:

We prove some uniqueness results for conics of minimal area that enclose a compact, full-dimensional subset of the elliptic plane. The minimal enclosing conic is unique if its center or axes are prescribed. Moreover, we provide sufficient conditions on the enclosed set that guarantee uniqueness without restrictions on the enclosing conics. Similar results are formulated for minimal enclosing conics of line sets as well.

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