RESEARCH ANNOUNCEMENTS ON "UPPER BOUND ESTIMATES OF EIGENVALUES FOR H(O)RMANDER OPERATORS ON NON-EQUIREGULAR SUB-RIEMANNIAN MANIFOLDS"

• 作者: CHEN Hua CHEN Hong-ge LI Jin-ning
• 来源期刊: 数学杂志
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Research Announcements
• 页码范围: 1-5
• 页数: 5页
• 语种: 中文
• DOI: 10.3969/j.issn.0255-7797.2022.01.001

摘要

1 Introduction and Main Results For n ≥ 2,let M be a n-dimensional connected smooth manifold.We take a fixed smooth measure on M with strictly positive density,and write dx as the measure when we integrate.Also,we simply denote the measure of a set E ? M by |E|.