Properly embedded minimal annuli in $mathbb{S}^2 imes mathbb{R}$
Properly embedded minimal annuli in $mathbb{S}^2 imes mathbb{R}$
复制标题
正确地将最小环嵌入 $mathbb{S}^2 imes mathbb{R}$
DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
Martin Ulrich Schmidt
中科院分区:
文献类型:
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作者:
L. Hauswirth;Martin Kilian;Martin Ulrich Schmidt
In $mathbb{S}^2 imes mathbb{R}$ there is a two-parameter family of properly embedded minimal annuli foliated by circles. In this paper we show that this family contains all properly embedded minimal annuli. We use the description of minimal annuli in $mathbb{S}^2 imes mathbb{R}$ by periodic harmonic maps $G : mathbb{C} o mathbb{S}^2$ of finite type. Due to the algebraic geometric correspondence of Hitchin [14], these harmonic maps are parametrized by hyperelliptic algebraic curves together with Abelian differentials with prescribed poles. We deform annuli by deforming spectral data in the corresponding moduli space. Along this deformation we control the flux and we preserve embeddedness. The center of the theory concerns the study of singularities of the flow. In particular we open and close nodes of singular spectral curves. This approach applies also to mean convex Alexandrov embedded cmc annuli in $mathbb{S}^3$ [12].