Canonical divisors and the additivity of the Kodaira dimension for morphisms or relative dimension one
Eckart Viehweg (1977)
Compositio Mathematica
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Eckart Viehweg (1977)
Compositio Mathematica
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A. J. De Jong (1996)
Publications Mathématiques de l'IHÉS
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A. Johan De Jong (1997)
Annales de l'institut Fourier
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In this article it is shown that any family of curves can be altered into a semi-stable family. This implies that if is an excellent scheme of dimension at most 2 and is a separated integral scheme of finite type over , then can be altered into a regular scheme. This result is stronger then the results of [ Smoothness, semi-stability and alterations to appear in Publ. Math. IHES]. In addition we deal with situations where a finite group acts.
Herbert Popp (1974)
Compositio Mathematica
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Stefan Schröer (2003)
Annales de l'Institut Fourier
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We show that the set of smooth curves of genus admitting a branched covering with only triple ramification points is of dimension at least . In characteristic two, such curves have tame rational functions and an analog of Belyi’s Theorem applies to them.
David Schubert (1991)
Compositio Mathematica
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Knud Lønsted, Steven L. Kleiman (1979)
Compositio Mathematica
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