Higher degree Galois covers of \(\mathbb {CP}^1 \times T\) (Q1766282)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Higher degree Galois covers of \(\mathbb {CP}^1 \times T\) |
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Higher degree Galois covers of \(\mathbb {CP}^1 \times T\) (English)
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28 February 2005
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Let \(T\) be a complex torus, and \(X\) the surface \(\mathbb{C}\mathbb{P}^1\times T\). If \(T\) is embedded in \(\mathbb{C}\mathbb{P}^{n-1}\) then \(X\) may be embedded in \(\mathbb{C}\mathbb{P}^{2n-1}\). Let \(X_{\text{Gal}}\) be its Galois cover with respect to a generic projection to \(\mathbb{C}\mathbb{P}^2\). In this paper the fundamental group of \(X_{\text{Gal}}\) is computed, using the Moishezon-Teicher degeneration, regeneration and the braid monodromy algorithm. It is shown that \(\pi_1(X_{\text{Gal}})= \mathbb{Z}^{4n-2}\). This is a generalization of the results of \textit{M. Amram, D. Goldberg, M. Teicher} and \textit{U. Vishne} [Algebr. Geom. Topol. 2, 403--432 (2002; Zbl 1037.14006)], where the case \(n=3\) was treated.
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fundamental group
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generic projection
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Seiberg-Witten invariants
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