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arXiv math/0311157math.GTmath.SG
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具有$b_+{=}1$的新辛4-流形

New symplectic 4--manifolds with $b_+{=}1$

Scott Baldridge

摘要:

具有$b_+{=}1$的辛4-流形$(X,ω)$根据$K^2$和$K\cdot ω$的符号被粗略地分类为规范类$K$和辛形式$ω$。除了流形满足$K^2=0$、$K\cdot ω>0$、$b_1=2$且不属于Lefschetz型的情况外,每个范畴的例子都是已知的。本文的目的是构造一个无限多的例子,这样的流形。此外,我们将证明这些流形具有非常特殊的性质-它们不是复流形,它们的Seiberg-Witten不变量与腔室结构无关,并且它们没有正标量曲率的度量。

英文摘要:

Symplectic 4-manifolds $(X,ω)$ with $b_+{=}1$ are roughly classified by the canonical class $K$ and the symplectic form $ω$ depending upon the sign of $K^2$ and $K\cdot ω$. Examples are known for each category except for the case when the manifold satisfies $K^2=0$, $K\cdot ω>0$, $b_1=2$, and fails to be of Lefschetz type. The purpose of this paper is to construct an infinite number of examples of such manifolds. Furthermore, we will show that these manifolds have very special properties -- they are not complex manifolds, their Seiberg-Witten invariants are independent of the chamber structure, and they do not have metrics of positive scalar curvature.

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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