【摘 要】
:
In this paper, we concern the divergence Kohn-Laplace equation n∑i=1n∑j=1(X?j (aijXiu)+Y?j (bijYiu) +Tu= f?n∑i=1(X?ifi+Y?igi)with bounded coefficients on the
【机 构】
:
Department of Applied Mathematics, Northwestern Polytechnical University, Xi’an 710129, China
论文部分内容阅读
In this paper, we concern the divergence Kohn-Laplace equation n∑i=1n∑j=1(X?j (aijXiu)+Y?j (bijYiu) +Tu= f?n∑i=1(X?ifi+Y?igi)with bounded coefficients on the Heisenberg group Hn, where X1,···,Xn,Y1,···,Yn and T are real smooth vector fields defined in a bounded region ? ? Hn. The local maxi-mum principle of weak solutions to the equation is established. The oscillation prop-erties of the weak solutions are studied and then the H?lder regularity and weak Har-nack inequality of the weak solutions are proved.
其他文献
对于水,最初赋予的意义是流动,在创造汉字的时候,我们祖先脑海中哗哗的声音一直流传了五千年.在五千年后的今天,我们信口谈起水,仍然会直观地想到长江、黄河、东海、西湖.水,
【摘 要】小学数学教材相关知识板块结构体系的复杂性,客观地决定了老师在开展具体的教学活动时必须选择合适的教学方法。情境教学法经过多年的探索实践,取得了一些成就,但在小学数学教学的应用中依然存在着一些问题。本文将先阐述情景教学的特点,然后分析情景教学在应用上的问题,最后提出相关对策来加以改善。 【关键词】小学数学 情境教学 问题 对策 在小学教育阶段,学生的个性特点决定了老师在开展相
姚克明先生要我为《上海作家》写写罗荪,还列举了好几条不容推诿的理由。其实,让亲属评述长辈是有局限的,距离太近视角太窄很容易犯片面化的毛病。好在中国现代文学馆曾于200
说来真是神秘而有趣,天下素有一些不期然而至的事物,有些叫人迷惑不解,有些让人遐想翩翩,而更多的是使人喜出望外.如天空里有突然飞来的陨石,大地上有被称之为灵鹫的飞来峰;
We are delighted to present this special issue in honor of Professor Jie Shen on the occasion of his sixtieth birthday in Journal of Mathematical Study (JMS) of
这是我晋江故乡独有的一种舞,一种男子汉跳的舞.rn这种舞可以是独舞,也可以是群舞:四人舞、八人舞、十六人舞、三十二人舞……无论是独舞或群舞,它都是那样地震憾人心--这就
We study a kind of generalized porous medium equation with fractional Laplacian and abstract pressure term. For a large class of equations corresponding to the