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arXiv 2103.13602math.GTmath.CO
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闭合定向PL四维流形的一类处理分解

Handle decompositions for a class of closed orientable PL 4-manifolds

Biplab Basak, Manisha Binjola

AI总结:

本文研究了一类具有半简单晶化且基本群为Z的闭合定向PL四维流形,构造了其处理分解,其中2柄数量取决于第二贝蒂数,其他h柄数量不超过2。

摘要:

本文研究了一类闭合连通定向PL四维流形,该流形具有半简单晶化且基本群为无限循环群。我们证明了该类流形具有处理分解,其中2柄的数量取决于其第二贝蒂数和其他h柄(h≤4)的数量不超过2。更具体地说,我们的主要结果是:对于具有半简单晶化且基本群为Z的闭合连通定向PL四维流形M,我们构造了M的处理分解,其类型为:(1)一个0柄,两个1柄,1+β₂(M)个2柄,一个3柄和一个4柄;(2)一个0柄,一个1柄,β₂(M)个2柄,一个3柄和一个4柄,其中β₂(M)表示流形M在Z系数下的第二贝蒂数。

英文摘要:

In this article, we study a class of closed connected orientable PL $4$-manifolds admitting a semi-simple crystallization and which have an infinite cyclic fundamental group. We show that the manifold in the class admits a handle decomposition in which the number of $2$-handles depends upon its second Betti number and other $h$-handles ($h \leq 4$) are at most $2$. More precisely, our main result is the following. For a closed connected orientable PL $4$-manifold having a semi-simple crystallization with the fundamental group as $\mathbb{Z}$, we have constructed a handle decomposition for $M$ as one of the following types: $(1)$ one $0$-handle, two $1$-handles, $1+β_2(M)$ $2$-handles, one $3$-handle and one $4$-handle, $(2)$ one $0$-handle, one $1$-handle, $β_2(M)$ $2$-handles, one $3$-handle and one $4$-handle, where $β_2(M)$ denotes the second Betti number of manifold $M$ with $\mathbb{Z}$ coefficients.

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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