项目名称: 三维流形Heegaard分解稳定化问题的研究
项目编号: No.11201202
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 杜昆
作者单位: 兰州大学
项目金额: 22万元
中文摘要: 流形的分类问题是研究流形的重要课题之一,人们总是按照一定的标准对流形进行分类,主要考虑其拓扑类,PL类和微分类;其方法主要有:代数方法,几何方法和组合方法.1968年,Haken证明了任意紧致三维流形都存在Heegaard分解;随着大量研究成果的出现,三维流形Heegaard分解日渐成为三维流形的一个重要不变量,对三维流形的分类起着至关重要的作用. 三维流形Heegaard分解稳定化问题是三维流形Heegaard分解重要课题之一;本课题主要利用三维流形组合方法和代数方法,从上下两个不同角度来研究三维流形Heegaard分解稳定化问题,给出三维流形Heegaard分解稳定化问题的一些充分必要条件.
中文关键词: Heegaard 分解;稳定化;;;
英文摘要: The classification of manifold is one of the important subject of the manifold,we mainly consider the topological classes,PL classes, differential classes;there are mainly three methods: algebraic method,geometric method and combinatorial method.In 1968, Haken proved that there is a Heegaard splitting for any compact 3-manifolds; With the emergence of a large number of research results,Heegaard splittings of 3-manifolds becomes an important invariants and plays an important role in 3-manifolds. The problem of stabilizations of Heegaard splittings of 3-manifolds is one of important subject of Heegaard splittings of 3-manifolds;From two different angles,we will study this problem using combinatorial and algebraic methods,and give some sufficient and necessary conditions.
英文关键词: Heegaard splitting;stabilization;;;