On finite Galois coverings of projective manifolds
On finite Galois coverings of projective manifolds
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关于射影流形的有限伽罗瓦覆盖
DOI:
10.2969/jmsj/04130391
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发表时间:
1989
影响因子:
0.7
通讯作者:
M. Namba
中科院分区:
文献类型:
--
作者:
M. Namba
By a Projective manifold, we mean a connected compact complex manifold which can be imbedded holomorphically into the complex projective space $P^{m}$ for some $m\geqq 1$ . Let $M$ be a projective manifold. A finite branched covering (or simply a finite covering) of $M$ is by definition an irreducible normal complex space $X$ together with a surjective proper finite holomorphic mapping $\pi;Xarrow M$. In this case, $X$ is also projective by Grauert [3]. A morphism(resp. an isomorphjsm) of $\pi;Xarrow M$ to another finite covering $\pi’$ : $X’arrow M$ is by definition a holomorphic (resp. biholomorphic) mapping $\phi:Xarrow X’$ such that $\pi’\cdot\phi=\pi$ . The set $G_{\pi}$ of all automorphisms of $\pi:Xarrow M$ forms a group under composition and is called the automorphism group of $\pi:Xarrow M$. G. acts on each fiber of $\pi$ .