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We use classification of non-symplectic automorphisms of K3 surfaces to obtain a partial classification of log del Pezzo surfaces of index three. We can classify those with "Multiple Smooth Divisor Property", whose definition we will give.…

Algebraic Geometry · Mathematics 2012-03-27 Hisanori Ohashi , Shingo Taki

We discuss the rational points on del Pezzo surface of degree 1 and 2 over any finite field $\mathbb F_q$, and give out the explicit equations of del Pezzo surfaces that have unique rational point.

Algebraic Geometry · Mathematics 2011-04-27 Shuijing Li

We give constructions of completions of the affine $3$-space into total spaces of del Pezzo fibrations of every degree other than $7$ over the projective line. We show in particular that every del Pezzo surface other than $\mathbb{P}^{2}$…

Algebraic Geometry · Mathematics 2024-01-08 Adrien Dubouloz , Takashi Kishimoto , Masaru Nagaoka

This paper is devoted to the study of a certain class of principal bundles on del Pezzo surfaces, which were introduced and studied by Friedman and Morgan in \cite{FMdP}: The two authors showed that there exists a unique principal bundle…

Algebraic Geometry · Mathematics 2007-05-23 Kursat Aker

We determine the tropicalizations of very affine surfaces over a valued field that are obtained from del Pezzo surfaces of degree 5, 4 and 3 by removing their (-1)-curves. On these tropical surfaces, the boundary divisors are represented by…

Algebraic Geometry · Mathematics 2015-01-13 Qingchun Ren , Kristin Shaw , Bernd Sturmfels

In this paper we prove that there are exactly two $G$-minimal surfaces which are $G$-birational to the quintic del Pezzo surface, where $G \cong C_5 \rtimes C_4$. These surfaces are the quintic del Pezzo surface itself and the surface…

Algebraic Geometry · Mathematics 2018-08-17 Jonas Wolter

Hirschfeld classified split del Pezzo surfaces of degree at least three whose points are all contained on the lines in the surface. We continue his work and begin the classification of split degree two del Pezzo surfaces over finite fields…

Algebraic Geometry · Mathematics 2016-04-12 Amanda Knecht , Kristofer Reyes

We classify smooth del Pezzo surfaces whose alpha-invariant of Tian is bigger than one.

Algebraic Geometry · Mathematics 2011-01-12 Ivan Cheltsov , Andrew Wilson

We construct jacobians of plane quartics without complex multiplication, using Del Pezzo surfaces of degree 2.

Algebraic Geometry · Mathematics 2023-02-14 Yuri G. Zarhin

We classify all generalized del Pezzo surfaces (i.e., minimal desingularizations of singular del Pezzo surfaces containing only rational double points) whose universal torsors are open subsets of hypersurfaces in affine space. Equivalently,…

Algebraic Geometry · Mathematics 2014-02-26 Ulrich Derenthal

This is the first article in a series aimed at classifying normal del Pezzo surfaces of Picard rank one over algebraically closed fields of arbitrary characteristic up to an isomorphism. Our guiding invariant is the height of a del Pezzo…

Algebraic Geometry · Mathematics 2025-08-20 Karol Palka , Tomasz Pełka

We prove asymptotics for the proportion of fibres with a rational point in a conic bundle fibration. The basis of the fibration is a general hypersurface of low degree.

Number Theory · Mathematics 2019-12-23 Efthymios Sofos , Erik Visse

We study the geography and birational geometry of 3-fold conic bundles over P^2 and cubic del Pezzo fibrations over P^1. We discuss many explicit examples and raise several open questions. This paper was submitted to the proceedings of the…

Algebraic Geometry · Mathematics 2007-05-23 Gavin Brown , Alessio Corti , Francesco Zucconi

We study del Pezzo surfaces that are quasismooth and well-formed weighted hypersurfaces. In particular, we find all such surfaces whose alpha-invariant of Tian is greater than 2/3.

Algebraic Geometry · Mathematics 2011-12-30 Ivan Cheltsov , Constantin Shramov

In order to study integral points of bounded log-anticanonical height on weak del Pezzo surfaces, we classify weak del Pezzo pairs. As a representative example, we consider a quartic del Pezzo surface of singularity type…

Number Theory · Mathematics 2025-05-19 Ulrich Derenthal , Florian Wilsch

It is pointed out that the hierarchy of fractal dimensions characterizing transfinite heterotic string spacetimes bears a striking resemblance to the sequence of the number of lines lying on Del Pezzo surfaces.

General Physics · Physics 2015-06-26 Metod Saniga

We describe the effect of rational singularities on the Brauer group of a surface, and compute the Brauer groups of all singular del Pezzo surfaces over an algebraically closed field.

Algebraic Geometry · Mathematics 2013-09-12 Martin Bright

We investigate geometric invariants of cuspidal edges on focal surfaces of regular surface. In particular, we shall clarify the sign of the singular curvature at a cuspidal edge on a focal surface using singularities of parallel surface of…

Differential Geometry · Mathematics 2026-05-19 Keisuke Teramoto

In this paper we classify all configurations of singular fibers of elliptic fibrations on the double cover of P^2 ramified along six lines in general position.

Algebraic Geometry · Mathematics 2016-09-07 Remke Kloosterman

Let S be a split family of del Pezzo surfaces over a discrete valuation ring such that the general fiber is smooth and the special fiber has ADE-singularities. Let G be the reductive group given by the root system of these singularities. We…

Algebraic Geometry · Mathematics 2020-09-21 Ulrich Derenthal , Norbert Hoffmann
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