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Related papers: Del Pezzo surfaces with many symmetries

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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

We prove new local inequality for divisors on surfaces and utilize it to compute $\alpha$-invariants of singular del Pezzo surfaces, which implies that del Pezzo surfaces of degree one whose singular points are of type $\mathbb{A}_{1}$,…

Algebraic Geometry · Mathematics 2012-10-04 Ivan Cheltsov , Dimitra Kosta

We study singular del Pezzo surfaces that are quasi-smooth and well-formed weighted hypersurfaces. We give an algorithm how to classify all of them.

Algebraic Geometry · Mathematics 2025-09-03 Erik Paemurru

We estimate $\delta$-invariants of some singular del Pezzo surfaces with quotient singularities, which we studied ten years ago. As a result, we show that each of these surfaces admits an orbifold K\"ahler--Einstein metric.

Algebraic Geometry · Mathematics 2020-01-22 Ivan Cheltsov , Jihun Park , Constantin Shramov

For every smooth del Pezzo surface $S$, smooth curve $C\in|-K_{S}|$ and $\beta\in(0,1]$, we compute the $\alpha$-invariant of Tian $\alpha(S,(1-\beta)C)$ and prove the existence of K\"ahler--Einstein metrics on $S$ with edge singularities…

Algebraic Geometry · Mathematics 2016-07-12 Ivan Cheltsov , Jesus Martinez-Garcia

For an arbitrary ample divisor A in smooth del Pezzo surface S of degree 1, we verify the condition of the polarization (S,A) to be K-stable and it is a simple numerical condition.

Algebraic Geometry · Mathematics 2016-06-07 Kyusik Hong , Joonyeong Won

We give a complete classification of del Pezzo surfaces with quotient singularities and Picard rank 1 which admit a Q-Gorenstein smoothing. There are 14 infinite families of toric examples. The surfaces in each family correspond to…

Algebraic Geometry · Mathematics 2019-02-20 Paul Hacking , Yuri Prokhorov

We state a number of conjectures that together allow one to classify a broad class of del Pezzo surfaces with cyclic quotient singularities using mirror symmetry. We prove our conjectures in the simplest cases. The conjectures relate…

The exceptional log Del Pezzo surfaces with delta=1 are classified.

Algebraic Geometry · Mathematics 2015-06-26 Sergey Kudryavtsev

We classify the automorphism groups of del Pezzo surfaces of degrees one and two over an algebraically closed field of characteristic two. This finishes the classification of automorphism groups of del Pezzo surfaces in all characteristics.

Algebraic Geometry · Mathematics 2025-03-26 Igor Dolgachev , Gebhard Martin

In an algebro-geometric way, we completely determine whether smooth del Pezzo surfaces are K-(semi)stable or not.

Algebraic Geometry · Mathematics 2019-03-25 Jihun Park , Joonyeong Won

We find normal forms for del Pezzo surfaces of degree $2$ over algebraically closed fields of characteristic $2$. For each normal form, we describe the structure of the group of automorphisms of the surface. In particular, we classify all…

Algebraic Geometry · Mathematics 2023-05-19 Igor Dolgachev , Gebhard Martin

We give a characterization of all del Pezzo surfaces of degree 6 over an arbitrary field $F$. A surface is determined by a pair of separable algebras. These algebras are used to compute the Quillen $K$-theory of the surface. As a…

Algebraic Geometry · Mathematics 2008-05-02 Mark Blunk

We classify del Pezzo surfaces with Du Val singularities that have infinite automorphism groups, and describe the connected components of their automorphisms groups.

Algebraic Geometry · Mathematics 2020-10-02 Ivan Cheltsov , Yuri Prokhorov

We classify all the del Pezzo surfaces with $\frac{1}{3}(1,1)$- and $\frac{1}{4}(1,1)$-singularities having no floating $(-1)$-curves into 39 types.

Algebraic Geometry · Mathematics 2019-03-05 Takayuki Miura

We classify all of the log del Pezzo surfaces $S$ of index $a$ such that the volume $(-K_S^2)$ is larger than or equal to $2a$.

Algebraic Geometry · Mathematics 2014-01-09 Kento Fujita

On del Pezzo surfaces, we study effective ample $\mathbb{R}$-divisors such that the complements of their supports are isomorphic to $\mathbb{A}^1$-bundles over smooth affine curves.

Algebraic Geometry · Mathematics 2019-03-25 Ivan Cheltsov , Jihun Park , Joonyeong Won

We classify quartic del Pezzo surface fibrations over the projective line via numerical invariants, giving explicit examples for small values of the invariants. For generic such fibrations, we describe explicitly the geometry of spaces of…

Algebraic Geometry · Mathematics 2013-01-31 Brendan Hassett , Yuri Tschinkel

We investigate the characteristic numbers of Del Pezzo surfaces using degenerations.

Algebraic Geometry · Mathematics 2007-05-23 Izzet Coskun

We complete the classification of automorphism groups of del Pezzo surfaces over algebraically closed fields of odd positive characteristic.

Algebraic Geometry · Mathematics 2023-05-19 Igor Dolgachev , Gebhard Martin
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