Abstract
Spacelike Willmore surfaces in 4-dimensional Lorentzian space forms, a topic in Lorentzian conformal geometry which parallels the theory of Willmore surfaces in S 4, are studied in this paper. We define two kinds of transforms for such a surface, which produce the so-called left/right polar surfaces and the adjoint surfaces. These new surfaces are again conformal Willmore surfaces. For them the interesting duality theorem holds. As an application spacelike Willmore 2-spheres are classified. Finally we construct a family of homogeneous spacelike Willmore tori.
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This work was supported by the National Natural Science Foundation of China (Grant No. 10771005)
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Ma, X., Wang, P. Spacelike Willmore surfaces in 4-dimensional Lorentzian space forms. Sci. China Ser. A-Math. 51, 1561–1576 (2008). https://doi.org/10.1007/s11425-008-0052-9
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DOI: https://doi.org/10.1007/s11425-008-0052-9