共形孤子上Lu=(??u)/(??t)的椭圆型梯度估计Elliptic Gradient Estimates of Lu=(??u)/(??t) on Conformal Solitons
杨静静,赵广文
摘要(Abstract):
本文证明了由一般共形向量场给出的共形孤子上的抛物方程Lu=(??u)/(??t)的正有界解的椭圆型梯度估计,作为推论,得到了关于古代解的Liouville型定理.我们也将主要结果应用到了自收缩子、自扩张子和平移孤子上.
关键词(KeyWords): 共形孤子;梯度估计;Liouville型定理
基金项目(Foundation): 国家自然科学基金项目(12001410)
作者(Author): 杨静静,赵广文
参考文献(References):
- [1]Arezzo C.,Sun J.,Conformal solitons to the mean curvature flow and minimal submanifolds,Math.Nachr.,2013,286(8-9):772-790.
- [2]Chen Q.,Jost J.,Qiu H.,Existence and Liouville theorems for V-harmonic maps from complete manifolds,Ann.Global Anal.Geom.,2012,42(4):565-584.
- [3]Chen Q.,Jost J.,Wang G.,A maximum principle for generalizations of harmonic maps in Hermitian,affine,Weyl,and Finsler geometry,J.Geom.Anal.,2015,25(4):2407-2426.
- [4]Li P.,Yau S.T.,On the parabolic kernel of the Schr??dinger operator,Acta Math.,1986,156(3-4):153-201.
- [5]Li X.,Sun J.,Gradient estimate for the positive solutions of Lu=0 and Lu=??u/??t on conformal solitons,Acta Math.Sin.,Engl.Ser.,2021,37(11):1768-1782.
- [6]Smoczyk K.,A relation between mean curvature flow solitons and minimal submanifolds,Math.Nachr.,2001,229:175-186.
- [7]Souplet P.,Zhang Q.S.,Sharp gradient estimate and Yau's Liouville theorem for the heat equation on noncompact manifolds,Bull.London Math.Soc.,2006,38(6):1045-1053.
- [8]Wei G.,Wylie W.,Comparison geometry for the Bakry-Emery Ricci tensor,J.Differential Geom.,2009,83(2):377-405.