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arXiv 1306.5542math.GT
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(S^3 \times S^1)^{#3}和(S^3 \(扭积)S^1)^{#3}的极小三角剖分

Minimal triangulations of (S^3\times S^1)^{#3} and (S^3 \(twisted product) S^1)^{#3}

Nitin Singh

摘要:

一个三角形化的$d$ -流形$K$,满足不等式$\binom{f_0(K)-d-1}{2}\geq \binom{d+2}{2}β_1(K;\mathbb{Z}_2)$对于$d\geq 3$ .满足等式界的三角化$d$ -流形称为{ \em紧邻流形}。本文给出了以$\mathbb{Z}_3$为自同构群的15点4-流形的紧邻三角剖分。其中一个例子是Bagchi和Datta在2011年建造的。我们表明,正好有12个这样的三角同构,其中10个是定向。

英文摘要:

A triangulated $d$-manifold $K$, satisfies the inequality $\binom{f_0(K)-d-1}{2}\geq \binom{d+2}{2}β_1(K;\mathbb{Z}_2)$ for $d\geq 3$. The triangulated $d$-manifolds that meet the bound with equality are called {\em tight neighborly}. In this paper, we present tight neighborly triangulations of 4-manifolds on 15 vertices with $\mathbb{Z}_3$ as automorphism group. One such example wasconstructed by Bagchi and Datta in 2011. We show that there are exactly 12 such triangulations up to isomorphism, 10 of which are orientable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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