A note on an invariant of fintushel and stern

A note on an invariant of fintushel and stern
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关于 fintushel 和 stern 不变量的注记

DOI:
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发表时间:
1985
期刊:
影响因子:
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通讯作者:
D. Zagier
D. Zagier
中科院分区:
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文献类型:
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作者:
W. Neumann;D. Zagier

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让艾尔...,~是两两素数,其中a。> i对于每个n i i。设Z = ~(el,...,~ n)是具有~i....阶奇异纤维的Seifert纤维同调3-球面。通过[iN-R](也参见[iN 1],[iN 2]),Z具有唯一取向,使其成为复曲面奇点(V(el,.,n),p);我们给E这个方向。这也是唯一的方向,其中E界定一个铅垂4-流形与负定交形式。最小的这种管道(即不允许(-l)-排污)是唯一的。它由下面的管道图给出(这也是上述奇点的最小良好分辨率图):
Let el,...,~ be pairwise prime integers with a. > i for each n i i. Let Z = ~ (el,...,~n) be the Seifert fibered homology 3-sphere with singular fibers of orders ~i .... '~ " By iN-R] (see also iN1], n iN2]), Z has a unique orientation making it the link of a complex surface singularity (V(el,...,en),p) ; we give E this orientation. This is also the unique orientation for which E bounds a plumbed 4-manifold with negative definite intersection form. A minimal such plumbing (i.e. admitting no (-l)-blow down) is unique. It is given by the following plumbing diagram (which is also the minimal good resolution diagram for the above singularity):