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检索条件"主题词=branched covering"
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A Remark on Weierstrass Points and Linear Series on Multiple covering Curves
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Acta Mathematica Sinica,English Series 2008年 第3期24卷 397-404页
作者: Edoardo BALLICO Changho KEEM Department of Mathematics University of Trento 38050 Povo (TN) Italy Department of Mathematics Seoul National University Seoul 151-742 Korea and National Institute for Mathematical Sciences 385-16 Doryong-dong Yuseong-guDaejeon 305-340 Korea
Here we study multiple coverings of rational and irational curves. We give a theorem about the non-gap sequence on m-gonal curves. We then study general irrational covering f : X→ C, and say when h^0(X, f^*(L))... 详细信息
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Isometry Groups of Some Dunwoody Manifolds
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Algebra Colloquium 2016年 第1期23卷 117-128页
作者: F. Spaggiari A.I. Telloni Dipartimento di Matematica Universit& di Modena e Reggio E. Via Campi 213/B 41100 Modena Italy
Dunwoody manifolds are an interesting class of closed connected orientable 3-manifolds, which are defined by means of Heegaard diagrams having a rotational symmetry. They are proved to be cyclic coverings of lens spac... 详细信息
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