Notes on the arithmetic of Fano threefolds
Yu I. Manin (1993)
Compositio Mathematica
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Yu I. Manin (1993)
Compositio Mathematica
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V. B. Mehta, A. Ramanathan (1988)
Compositio Mathematica
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G. Ewald (1988)
Discrete & computational geometry
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Yoshifumi Takeda (2007)
Colloquium Mathematicae
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The pre-Tango structure is an ample invertible sheaf of locally exact differentials on a variety of positive characteristic. It is well known that pre-Tango structures on curves often induce pathological uniruled surfaces. We show that almost all pre-Tango structures on varieties induce higher-dimensional pathological uniruled varieties, and that each of these uniruled varieties also has a pre-Tango structure. For this purpose, we first consider the p-closed rational vector field...
Sato, Hiroshi (2003)
International Journal of Mathematics and Mathematical Sciences
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Jarosław Buczyński
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Real Legendrian subvarieties are classical objects of differential geometry and classical mechanics and they have been studied since antiquity (see [Arn74], [Sła91] and references therein). However, complex Legendrian subvarieties are much more rigid and have more exceptional properties. The most remarkable case is the Legendrian subvarieties of projective space; prior to the author's research only few smooth examples of these were known (see [Bry82], [LM07]). Strong restrictions on...
Edoardo Ballico, Marina Bertolini, Cristina Turrini (1997)
Collectanea Mathematica
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Some inequalities between the class and the degree of a smooth complex projective manifold are given. Application to the case of low sectional genus are supplied.
L. Ein (1986)
Inventiones mathematicae
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John T. Baldwin, Joel Berman (1976)
Colloquium Mathematicae
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Peter Kleinschmidt (1988)
Aequationes mathematicae
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