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Related papers: A characterization of Fano type varieties

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We show that the Picard rank is constant in families of Fano varieties (in arbitrary characteristic) and we moreover investigate the constancy of the index.

Algebraic Geometry · Mathematics 2017-04-12 Frank Gounelas , Ariyan Javanpeykar

We show that every Mori dream space of globally $F$-regular type is of Fano type. As an application, we give a characterization of varieties of Fano type in terms of the singularities of their Cox rings.

Algebraic Geometry · Mathematics 2012-01-06 Yoshinori Gongyo , Shinnosuke Okawa , Akiyoshi Sannai , Shunsuke Takagi

We prove divisorial canonicity of Fano double hypersurfaces of general position.

Algebraic Geometry · Mathematics 2009-11-13 Aleksandr Pukhlikov

We construct examples of Fano manifolds, which are defined over a field of positive characteristic, but not over $\com$.

Algebraic Geometry · Mathematics 2017-06-20 Ilya Karzhemanov

We give a characterization of Gorenstein toric Fano varieties of dimension $n$ with index $n$ among toric varieties. As an application, we give a strong version of Fujita's freeness conjecture and also give a simple proof of Fujita's very…

Algebraic Geometry · Mathematics 2014-04-29 Shoetsu Ogata , Huai-Liang Zhao

We classify primitive Fano threefolds in positive characteristic whose Picard numbers are at least two. We also classify Fano theefolds of Picard rank two.

Algebraic Geometry · Mathematics 2025-07-24 Masaya Asai , Hiromu Tanaka

We classify Q-Fano threefolds of Fano index > 2 and big degree.

Algebraic Geometry · Mathematics 2016-01-29 Yuri Prokhorov

The purpose of the present paper is to generalize Sakai's work on anticanonical models of rational surfaces to varieties of Fano type. We first prove a characterization of Fano type varieties using the singularities of anticanonical models.…

Algebraic Geometry · Mathematics 2014-12-30 Sung Rak Choi , DongSeon Hwang , Jinhyung Park

Fano varieties are subvarieties of the Grassmannian whose points parametrize linear subspaces contained in a given projective variety. These expository notes give an account of results on Fano varieties of complete intersections, with a…

Algebraic Geometry · Mathematics 2012-12-05 Paul Larsen

In this note, finite type epimorphisms of rings are characterized.

Commutative Algebra · Mathematics 2018-03-20 Abolfazl Tarizadeh

We classify complex projective manifolds $X$ for which there exists a point $a$ such that the blow-up of $X$ at $a$ is Fano.

Algebraic Geometry · Mathematics 2007-05-23 L. Bonavero , F. Campana , J. A. Wiśniewski

We construct several new families of Fano varieties of K3 type. We give a geometrical explanation of the K3 structure and we link some of them to projective families of irreducible holomorphic symplectic manifolds.

Algebraic Geometry · Mathematics 2019-04-12 Enrico Fatighenti , Giovanni Mongardi

We give sufficient conditions for the semisimplicity of quantum cohomology of Fano varieties of Picard rank 1. We apply these techniques to prove new semisimplicity results for some Fano varieties of Picard rank 1 and large index. We also…

Algebraic Geometry · Mathematics 2014-05-26 Nicolas Perrin

We prove various characterizations of the period torsor of abelian varieties. This is the submitted version.

Number Theory · Mathematics 2021-01-19 J. S. Milne

We give an effective upper bound for the index of klt complements on toric Fano varieties.

Algebraic Geometry · Mathematics 2025-07-30 Florin Ambro

We classify the polarized symplectic automorphisms of Fano varieties of smooth cubic fourfolds (equipped with the Pl\"ucker polarization) and study the fixed loci.

Algebraic Geometry · Mathematics 2013-03-15 Lie Fu

Given any field $k$ (not necessarily perfect), we study the smoothing of a semistable Fano variety over $k$. In characteristic 0, the reduced semistable Fano degenerate fibers of Mori fibrations are classified. In positive characteristic,…

Algebraic Geometry · Mathematics 2016-06-03 Junchao Shentu

We study singular Fano threefolds of type $V_{22}$.

Algebraic Geometry · Mathematics 2017-08-16 Yuri Prokhorov

We classify smooth Fano threefolds with infinite automorphism groups.

Algebraic Geometry · Mathematics 2021-06-11 Ivan Cheltsov , Victor Przyjalkowski , Constantin Shramov

An inductive approach to classifying toric Fano varieties is given. As an application of this technique, we present a classification of the toric Fano threefolds with at worst canonical singularities. Up to isomorphism, there are 674,688…

Algebraic Geometry · Mathematics 2019-08-15 Alexander M. Kasprzyk