arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1508.03041math.DG
收藏

Finsler里奇流下Ricci标量的演化

Evolution of Ricci scalar under Finsler Ricci flow

B. Bidabad, M. K. Sedaghat

摘要:

最近,我们研究了一类Finsler度量沿Finsler里奇流的演化,并证明了它在短时间内的收敛性.本文给出了Finslerian里奇流的约化$hh$ -曲率和Ricci标量的发展方程,证明了里奇流在有限时刻保持约化$hh$ -曲率的正性.其次,证明了Ricci标量的演化是一个抛物型方程,并且如果初始Finsler度量具有正的旗曲率,则只要解存在,旗曲率和Ricci标量都保持为正.最后,得到了沿里奇流的里奇标量的下界。

英文摘要:

Recently, we have studied evolution of a family of Finsler metrics along Finsler Ricci flow and proved its convergence in short time. Here, evolution equation of the reduced $hh$-curvature and the Ricci scalar along the Finslerian Ricci flow is obtained and it is proved that the Ricci flow preserves positivity of reduced $hh$-curvature on finite time. Next, it is shown that the evolution of Ricci scalar is a parabolic-type equation and if the initial Finsler metric is of positive flag curvature, then the flag curvature and the Ricci scalar remain positive as long as the solution exists. Finally, a lower bound for the Ricci scalar along the Ricci flow is obtained.

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。

↑