نتایج جستجو برای: new varieties

تعداد نتایج: 1887946  

2012
X. ZHU

We give a group theoretic definition of “local models” as sought after in the theory of Shimura varieties. These are projective schemes over the integers of a p-adic local field that are expected to model the singularities of integral models of Shimura varieties with parahoric level structure. Our local models are certain mixed characteristic degenerations of Grassmannian varieties; they are ob...

2015
Kathleen Thelen

Comparative political economy is often based on the premise that the latter is true. In particular, the now classic Varieties of Capitalism (VofC) comparative approach postulates two types of institutional frameworks. The general idea was that each institutional solution generates positive externalities which may or may not be captured by specific solutions in other institutional domains. There...

1999
Shinichi Mochizuki

In this paper, we generalize to the “log regular case” a result of de Jong and Oort which states that any morphism (satisfying certain conditions) from the complement of a divisor with normal crossings in a regular scheme to a moduli stack of stable curves extends over the entire regular scheme. The proof uses the theory of “regular log schemes ” – i.e., schemes with singularities like those of...

2000
PIERRE GRINSPAN

Theorem 1.1 (Chudnovsky’s theorems). Let Λ = Zω+Zω′ ⊂ C be a lattice with invariants g2, g3, Weierstrass functions ℘, ζ and quasi-periods η, η′, all defined in the usual way (see [Sil94]). Each of the sets below contains at least two algebraically independent numbers : first (1) {g2, g3, η ω , π ω}, (2) {g2, g3, ω, η, ω′, η′}; if we assume g2, g3 ∈ Q̄ : (3) { η ω , π ω}, (4) {ω, ω′, η, η′}; and ...

2005
YI ZHANG KANG ZUO

Motivated by the Strominger-Yau-Zaslow conjecture, we study fibre spaces whose total space has trivial canonical bundle. Especially, we are interest in CalabiYau varieties with fibre structures. In this paper, we only consider semi-stable families. We use Hodge theory and the generalized Donaldson-Simpson-Uhlenbeck-Yau correspondence to study the parabolic structure of higher direct images over...

Journal: :CoRR 2008
Nathan Owen Ilten Hendrik Süß

A description of complete normal varieties with lower dimensional torus action has been given in [AHS08], generalizing the theory of toric varieties. Considering the case where the acting torus T has codimension one, we describe T -invariant Weil and Cartier divisors and provide formulae for calculating global sections, intersection numbers, and Euler characteristics. As an application, we use ...

2005
Tatjana Petković

The elementary result of Variety theory is Eilenberg’s Variety theorem which was motivated by characterizations of several families of string languages by syntactic monoids or semigroups, such as Schützenberger’s theorem connecting star-free languages and aperiodic monoids. Eilenberg’s theorem has been extended in various directions. For example, Thérien involved varieties of congruences on fre...

2006
Rene Salazar Niels P. Louwaars Bert Visser

NOTICE: CAPRi Working Papers contain preliminary material and research results, and are circulated prior to a full peer review in order to stimulate discussion and critical comment. It is expected that most CAPRi Working Papers will eventually be published in some other form, and that their content may also be revised. ABSTRACT Current farmers' breeding goes beyond the gradual selection in land...

2011
K. Hamouz J. Lachman K. Pazderů J. Tomášek K. Hejtmánková V. Pivec

The aim of this study was to determine that the total anthocyanin content (TAC) and antioxidant activity (AOA) in potato flesh with different colours grown in the Czech Republic. Four yellowor white-, six purpleand four red-fleshed varieties were grown in 2009 at two different sites (Valečov – highland, seed potato area at 460 m a.s.l., Přerov nad Labem – lowland, new potatoes area at 178 m a.s...

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