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arXiv 1704.00295math.DG
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7维Heisenberg群上的Laplacian协流

Laplacian coflow on the 7-dimensional Heisenberg group

Leonardo Bagaglini, Marisa Fernández, Anna Fino

摘要:

研究了$7$维Heisenberg群上$G_2$ -结构的Laplacian协流和修正的Laplacian协流.对于Laplacian协流,我们证明了该解总是古老的,也就是说,它定义在某个区间$(-\infty,T)$,与$0<T<+\infty$。然而,对于修正的Laplacian协流,我们证明了在某些情况下,解只定义在有限区间上,而在另一些情况下,解是古老的或永恒的,即它定义在$(-\infty, \infty)$上.

英文摘要:

We study the Laplacian coflow and the modified Laplacian coflow of $G_2$-structures on the $7$-dimensional Heisenberg group. For the Laplacian coflow we show that the solution is always ancient, that is it is defined in some interval $(-\infty,T)$, with $0<T<+\infty$. However, for the modified Laplacian coflow, we prove that in some cases the solution is defined only on a finite interval while in other cases the solution is ancient or eternal, that is it is defined on $(-\infty, \infty)$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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