Results 31 to 40 of about 316,671 (311)
Key varieties for surfaces of general type [PDF]
, 2008 The study of canonical models of surfaces of general type is a subject which has been of interest for many years, since the time of Enriques. The major question is: given particular values of pg and K2 can one construct the moduli space of regular ...
Coughlan, Stephen Thomas
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Error-Correcting Codes on Projective Bundles over Deligne–Lusztig Varieties
Mathematics, 2023 The aim of this article is to give lower bounds on the parameters of algebraic geometric error-correcting codes constructed from projective bundles over Deligne–Lusztig surfaces.
Daniel Camazón Portela +1 more
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Generalized Ribaucour-type surfaces
, 2023 In this work we generalize the surfaces studied in [8], we define the generalization of Ribaucour-type surfaces (in short, GRT-surfaces). We obtain present a representation for GRT-surfaces with prescribed Gauss map which depends on two holomorphic functions and a real function l. We give explicit examples of GRT-surfaces.
Mendez, Milton Javier Cárdenas +1 more
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Pluricanonical Systems On Algebraic Surfaces Of General Type [PDF]
Journal of the Mathematical Society of Japan, 1967 After preparing the vanishing theorems, the main Theorem 8 will be proved, that is, it is shown that the m-canonical system is free from base points when \(m\geqq 4\), and the m-canonical map is birational when \(m\geqq 6\).
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Surfaces of Constant Curvature in the Pseudo-Galilean Space
International Journal of Mathematics and Mathematical Sciences, 2012 We develop the local theory of surfaces immersed in the pseudo-Galilean space, a special type of Cayley-Klein spaces. We define principal, Gaussian, and mean curvatures.
Željka Milin Šipuš, Blaženka Divjak
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ORTHOGONAL CURVED COORDINATE SYSTEM AND FORMING THE SURFACES ON TRAPEZIUM-CURVED PLANS
RUDN Journal of Engineering Research, 2017 Thin space constructions on curved plans there are used at building of public structures, trade centers. Sport constructions. Working-out the methods of forming of the surfaces on the curved plans that is one of the modern task of the architecture and ...
V N Ivanov, T S Imomnazarov, I T Farhan
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Simple fibrations in $(1,2)$ -surfaces
Forum of Mathematics, Sigma, 2023 We introduce the notion of a simple fibration in $(1,2)$ -surfaces – that is, a hypersurface inside a certain weighted projective space bundle over a curve such that the general fibre is a minimal surface of general type with $p_g=2$ and
Stephen Coughlan, Roberto Pignatelli
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Microbiology Spectrum, 2023 The increased transmissibility of SARS-CoV-2 variants of concern (VOCs) has raised questions regarding the environmental stability of these viruses. Although a prolonged survival time has been reported for SARS-CoV-2, how long new variants can persist on
Bei Wang +12 more
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Godeaux and Campedelli Surfaces via Deformations
MathematicsIn this paper, we construct two deformations of the Godeaux surface with π1≅Z4, such that each central fibre contains a family of conics. We show that surfaces that are birational to these Godeaux surfaces exist in two connected components of the moduli ...
Haseeb Wali, Sohail Iqbal
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Importance of Type I and III Interferons at Respiratory and Intestinal Barrier Surfaces
Frontiers in Immunology, 2020 Interferons (IFNs) constitute the first line of defense against microbial infections particularly against viruses. They provide antiviral properties to cells by inducing the expression of hundreds of genes known as interferon-stimulated genes (ISGs). The
Megan L. Stanifer +4 more
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