Results 11 to 20 of about 445,079 (174)
Is Every Toric Variety an M-variety? [PDF]
manuscripta mathematica, 2006 A complex algebraic variety X defined over the real numbers is called an M-variety if the sum of its Betti numbers (for homology with closed supports and coefficients in Z/2) coincides with the corresponding sum for the real part of X. It has been known for a long time that any nonsingular complete toric variety is an M-variety.
Bihan, Frederic +3 more
openaire +5 more sources
Plant Varieties Studying and Protection, 2009 A comparative research of qualitative characteristics has been performed on qualitative characteristics of modern varieties and hybrids of Sunflower for the five years of research and technical examination in various soil and climate conditions: Steppe ...
О. О. Шовгун +6 more
doaj +1 more source
Varieties with small discriminant variety [PDF]
Transactions of the American Mathematical Society, 2006 Let X be a smooth complex projective variety, let L be an ample and spanned line bundle on X, V C H°(X,L) defining a morphism Φ V : X → P N and let D(X,V) be its discriminant locus, the variety parameterizing the singular elements of |V|. We present two bounds on the dimension of D(X, V) and its main component relying on the geometry of Φ V (X) ⊂ P N .
A. LANTERI, R. MUNOZ
openaire +3 more sources
Plant Varieties Studying and Protection, 2008 According to the seed quality indices the soft winter wheat seeds quality which were included in to the State Register of ріалі varieties of Ukraine in 2008 was defined (consistence of the albumen, flour s-rength. bread size).
О. О. Шовгун +5 more
doaj +1 more source
Severi varieties and their varieties of reductions
Journal für die reine und angewandte Mathematik (Crelles Journal), 2005 41 ...
Manivel, Laurent, Iliev, Atanas
openaire +4 more sources
Plant Varieties Studying and Protection, 2014 This paper presents the results of molecular studies on testing and evaluation of multiplex test systems for the genetically modified organisms’ (GMOs) identification by PCR in real time.
Л. В. Король +5 more
doaj +1 more source
Secant varieties of toric varieties
Journal of Pure and Applied Algebra, 2007 v1, AMS LaTex, 5 figures, 25 pages; v2, reference added; v3, This is a major rewrite. We have strengthened our main results to include a classification of smooth lattice polytopes P such that Sec X_P does not have the expected dimension. (See Theorems 1.4 and 1.5.) There was also a considerable amount of reorganization, and some expository material was
David A. Cox, Jessica Sidman
openaire +3 more sources
Geometric and Functional Analysis, 2022 AbstractWe generalize the Guth–Katz joints theorem from lines to varieties. A special case says that N planes (2-flats) in 6 dimensions (over any field) have $$O(N^{3/2})$$ O ( N 3 /
Tidor, Jonathan +2 more
openaire +3 more sources
Plant Varieties Studying and Protection, 2017 Purpose. To define statistical methods and tools (application packages) for creating the decision support system (DSS) for qualifying examination of plant varieties suitable for dissemination (VSD) in the context of data processing tasks. To substantiate
Н. В. Лещук +4 more
doaj +1 more source
Adjoint varieties and their secant varieties
Indagationes Mathematicae, 1999 AbstractThe purpose of this article is to show how the graded decomposition of complex simple Lie algebras g can be applied to studying adjoint varieties X and their secant varieties Sec X. Firstly quadratic equations defining adjoint varieties are explicitly given.
Osami Yasukura +2 more
openaire +2 more sources