Associative Cones and Integrable System

Associative Cones and Integrable System
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关联锥体和可积系统

DOI:
10.1007/s11401-005-0447-7
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发表时间:
2006
期刊:
Chinese Annals of Mathematics, Series B
影响因子:
--
通讯作者:
Erxiao Wang
Erxiao Wang
中科院分区:
--
文献类型:
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作者:
C. Terng;Shengli Kong;Erxiao Wang

文献摘要

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摘要我们将7定义为八元数的纯虚部。然后,八进制的乘法为单位球提供了一个自然的几乎复杂的结构。已知在一个曲面上的锥是一个结合子流形,当且仅当它几乎是复数的inS6。在本文中,我们证明了几乎复杂曲线ins6的gaas - codazzi方程是与6对称空间eg2 =T2相关的原始映射的方程,并用它来解释一些已知的结果。此外,方程fors1 -对称几乎复曲线ins6是周期Toda格,并给出了周期解的讨论。
AbstractWe identify ℝ7as the pure imaginary part of octonions. Then the multiplication in octonions gives a natural almost complex structure for the unit sphereS6. It is known that a cone over a surfaceMinS6is an associative submanifold of ℝ7if and only ifMis almost complex inS6. In this paper, we show that the Gauss-Codazzi equation for almost complex curves inS6are the equation for primitive maps associated to the 6-symmetric spaceG2=T2, and use this to explain some of the known results. Moreover, the equation forS1-symmetric almost complex curves inS6is the periodic Toda lattice, and a discussion of periodic solutions is given.