Research on various geometric structures on 3-manifolds
3-流形上的各种几何结构研究
基本信息
- 批准号:15540073
- 负责人:
- 金额:$ 1.34万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1.Morimoto's Conjecture on the tunnel numbers of composite knots in 3-manifoldsLet t(K) be the tunnel number of a knot K in a 3-manifold. Suppose for m-small knots K_1,…,K_n, the super additivity of tunnel number does not hold for #^n_<i=1> K_i, Then we proved that there exists a subset I of {1,【triple bond】,n} such that #_<i∈1>/K_i admits a primitive meridian.2.The growth rate of tunnel number of knotsFor a knot K in a 3-manifold M, we defined a numerical invariant called the growth rate of the tunnel numbers of K, and proved the following.Suppose that the Heegaard genus of K is greater than the Heegaard genus of M. Then the growth rate of the tunnel numbers of K is less than 1.3.Gersten's Problem for automatic groupGersten posed the following problem "Each automatic group is eithr (1)a finite group, (2)contains free abelian group of rank 2,or (3)a word hyperbolic group." We showed that for a class of automatic group (called n-starred groups) this problem is solved affirmatively.4.Heegaard gradients Seifert fibered spacesWe completely determined for which Seifert fibered space, the Heegaard gradient vanish.
1.关于3-流形中复合纽结的隧道数的Morimoto猜想设t(K)为3-流形中纽结K的隧道数。设对m-小纽结K_1,.,K_n,隧道数的超可加性对K_i不成立,则证明了存在{1,[三键],n}的子集I,使得K_i有一个本原纽结. 2.纽结隧道数的增长率对3-流形M中的纽结K,定义了一个数值不变量K的隧道数增长率,并证明了:假设K的Heegaard亏格大于M的Heegaard亏格。Gersten提出了如下问题:“每个自动群是(1)有限群,(2)包含秩为2的自由交换群,或(3)字双曲群。“我们证明了对于一类自动群(称为n星群),这个问题是肯定解决的。4. Heegaard梯度Seifert纤维空间我们完全确定了对于哪种Seifert纤维空间,Heegaard梯度为零。
项目成果
期刊论文数量(54)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
On conformally flat critical Riemannian metrics for a curvature functional
- DOI:10.3792/pjaa.81.27
- 发表时间:2005-02
- 期刊:
- 影响因子:0
- 作者:M. Katagiri
- 通讯作者:M. Katagiri
Locally thin position for a link
链接的局部薄位置
- DOI:
- 发表时间:2003
- 期刊:
- 影响因子:0
- 作者:Kobayashi;Teiichi;Minyou Katagiri;T.Shibata;Tsuyoshi Kobayashi;T.Kobayashi;Tsuyoshi Kobayashi;S.Matsumoto;T.Inaba;Kazuhiro Ichihara;Tsuyoshi Kobayashi
- 通讯作者:Tsuyoshi Kobayashi
Kazuhiro Ichihara, Masakazu Teragaito: "Klein bottle surgery and genera of knots"Pacific J.Math.. 210(2). 317-333 (2003)
Kazuhiro Ichihara、Masakazu Teragaito:“克莱因瓶手术和结属”Pacific J.Math.. 210(2)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Heegaard gradient of Seifert fibered 3-manifolds
Seifert 纤维 3 流形的 Heegaard 梯度
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Tomohisa Inoue;Juno Mukai;Kazuhiro Ichihara
- 通讯作者:Kazuhiro Ichihara
Local detection of strongly irreducible Heegaard splittings via knot exteriors
通过结外部局部检测强不可约 Heegaard 分裂
- DOI:
- 发表时间:2004
- 期刊:
- 影响因子:0
- 作者:Kobayashi;Teiichi;Minyou Katagiri;T.Shibata;Tsuyoshi Kobayashi
- 通讯作者:Tsuyoshi Kobayashi
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KOBAYASHI Tsuyoshi其他文献
KOBAYASHI Tsuyoshi的其他文献
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{{ truncateString('KOBAYASHI Tsuyoshi', 18)}}的其他基金
Development of the novel molecular targeted therapy against hepatocellular carcinoma invasion and metastasis
新型抗肝细胞癌侵袭转移分子靶向治疗药物的研究进展
- 批准号:
21791288 - 财政年份:2009
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
On developments and applications of Heegaard theory
论Heegaard理论的发展与应用
- 批准号:
21540082 - 财政年份:2009
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Research on 3-manifolds based on geometric techniques and its expanse
基于几何技术的3-流形及其展开研究
- 批准号:
19540083 - 财政年份:2007
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Geometric structures of 3-manifolds and various related structures
三流形的几何结构及各种相关结构
- 批准号:
17540077 - 财政年份:2005
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Representations of 3-manifolds and geometric informations derived from them
3-流形的表示以及从它们导出的几何信息
- 批准号:
12640071 - 财政年份:2000
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Combinatorial structures of low dimensional manifolds
低维流形的组合结构
- 批准号:
10640076 - 财政年份:1998
- 资助金额:
$ 1.34万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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Generic Flows, Ricci Curvature, Heegaard Splittings, and Nodal Sets
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25887039 - 财政年份:2013
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结、Heegaard 裂口和宽度复合体
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