Varieties and finite closure conditions
John T. Baldwin, Joel Berman (1976)
Colloquium Mathematicae
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Displaying similar documents to “Determination of Fermat varieties with trivial Hasse-Witt map (an application of the Farey series)”
Varieties and finite closure conditions
Pre-Tango structures and uniruled varieties
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...
On permanent vector-varieties in n dimensions
Santaló, L.A. (1951)
Portugaliae mathematica
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The dimension of a variety
Ewa Graczyńska, Dietmar Schweigert (2007)
Discussiones Mathematicae - General Algebra and Applications
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Derived varieties were invented by P. Cohn in [4]. Derived varieties of a given type were invented by the authors in [10]. In the paper we deal with the derived variety of a given variety, by a fixed hypersubstitution σ. We introduce the notion of the dimension of a variety as the cardinality κ of the set of all proper derived varieties of V included in V. We examine dimensions of some varieties in the lattice of all varieties of a given type τ. Dimensions of varieties of lattices...
Varieties with small dual varieties, I.
L. Ein (1986)
Inventiones mathematicae
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On the Classification of Toric Fano Varieties.
G. Ewald (1988)
Discrete & computational geometry
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On varieties of orgraphs
Alfonz Haviar, Gabriela Monoszová (2001)
Discussiones Mathematicae Graph Theory
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In this paper we investigate varieties of orgraphs (that is, oriented graphs) as classes of orgraphs closed under isomorphic images, suborgraph identifications and induced suborgraphs, and we study the lattice of varieties of tournament-free orgraphs.
Schubert varieties in
V. B. Mehta, A. Ramanathan (1988)
Compositio Mathematica
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A note on dual discriminator varieties.
Ramalho, Margarita (2001)
Portugaliae Mathematica. Nova Série
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Varieties with an extremal number of degenerate higher secant varieties.
Bjorn Adlandsvik (1988)
Journal für die reine und angewandte Mathematik
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On lattices of varieties of universal algebras
J. Płonka (1987)
Colloquium Mathematicae
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Schubert varieties and standard monomial theory
V. Lakshmibai (1990)
Banach Center Publications
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On the Shafarevich and Tate conjectures for hyperkähler varieties.
Yves André (1996)
Mathematische Annalen
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Characterization of global Phragmén-Lindelöf conditions for algebraic varieties by limit varieties only
Rüdiger W. Braun, Reinhold Meise, B. A. Taylor (2006)
Annales Polonici Mathematici
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For algebraic surfaces, several global Phragmén-Lindelöf conditions are characterized in terms of conditions on their limit varieties. This shows that the hyperbolicity conditions that appeared in earlier geometric characterizations are redundant. The result is applied to the problem of existence of a continuous linear right inverse for constant coefficient partial differential operators in three variables in Beurling classes of ultradifferentiable functions.