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Related papers: Effective finite generation for adjoint rings

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We prove the finite generation of the adjoint ring for $\mathbb{Q}$-factorial log surfaces over any algebraically closed field.

Algebraic Geometry · Mathematics 2016-01-07 Kenta Hashizume

We present a sharp upper bound for the number of generators of a finite group in terms of the ratio between the order and the exponent.

Group Theory · Mathematics 2025-08-28 Luca Sabatini

In this paper we obtain significant bounds for the number of maximal subgroups of a given index of a finite group. These results allow us to give new bounds for the number of random generators needed to generate a finite $d$-generated group…

Group Theory · Mathematics 2023-03-14 A. Ballester-Bolinches , R. Esteban-Romero , P. Jiménez-Seral

We use recent results on matrix semi-invariants to give degree bounds on generators for the ring of semi-invariants for quivers with no oriented cycles.

Representation Theory · Mathematics 2016-03-02 Harm Derksen , Visu Makam

We obtain tight bounds for the minimal number of generators of an ideal with bounded-degree generators in a polynomial ring $K[X_1,\dots,X_n],$ as well as a sharp quantification of the maximum possible size of a minimal generating set of…

Commutative Algebra · Mathematics 2025-09-23 Andrei Mandelshtam

We give bounds on the degree of generation and relations of section rings associated to arbitrary $\mathbb{Q}$-divisors on projective spaces of all dimensions and Hirzebruch surfaces. For section rings of effective $\mathbb{Q}$-divisors on…

Algebraic Geometry · Mathematics 2018-12-19 Aaron Landesman , Peter Ruhm , Robin Zhang

An introduction to all the key ideas of Lazic's proof of the theorem on the finite generation of adjoint rings.

Algebraic Geometry · Mathematics 2010-06-29 Alessio Corti

We give a characterization of limits of dihedral groups in the space of finitely generated marked groups. We also describe the topological closure of dihedral groups in the space of marked groups on a fixed number of generators.

Group Theory · Mathematics 2007-10-09 Luc Guyot

We prove the finite generation of canonical rings of projective variety of general type defined over complex numbers.

Algebraic Geometry · Mathematics 2007-05-23 Hajime Tsuji

In this short note we prove a finite generation result for the coordinate ring of certain affine group schemes over a discrete valuation ring. This may be used to simplify the use of results of Prasad and Yu on quasi-reductive groups by…

Algebraic Geometry · Mathematics 2011-05-05 Najmuddin Fakhruddin

In this paper we give a description of the generators of the prime level congruence subgroups of braid groups. Also, we give a new presentation of the symplectic group over a finite field, and we calculate symmetric quotients of the prime…

Group Theory · Mathematics 2016-09-20 Charalampos Stylianakis

This paper presents a novel approach to constructing finite generating sets for infinitely generated ideals. By integrating algebraic and computational techniques, we provide a method to identify finite generators, demonstrated through…

Commutative Algebra · Mathematics 2025-08-08 Takafumi Shibuta

In this paper we determine a minimal set of generators for the Cox rings of extremal rational elliptic surfaces. Moreover, we develop a technique for computing the ideal of relations between them which allows, in all but three cases, to…

Algebraic Geometry · Mathematics 2013-02-19 Michela Artebani , Alice Garbagnati , Antonio Laface

Let M be a Q-divisor on a smooth surface over C. In this paper we give criteria for very ampleness of the adjoint of the round-up of M. (Similar results for global generation were given by Ein and Lazarsfeld and used in their proof of…

alg-geom · Mathematics 2016-08-30 Vladimir Masek

In this paper we investigate injective generation for graded rings. We first examine the relation between injective generation and graded injective generation for graded rings. We then reduce the study of injective generation for graded…

Representation Theory · Mathematics 2025-04-08 Panagiotis Kostas , Chrysostomos Psaroudakis

We prove two approximations of the open problem of whether the adjoint group of a non-nilpotent nil ring can be finitely generated: We show that the adjoint group of a non-nilpotent Jacobson radical cannot be boundedly generated, and on the…

Rings and Algebras · Mathematics 2018-10-02 Be'eri Greenfeld

We give a new and self-contained proof of the finite generation of adjoint rings with big boundaries. As a consequence, we show that the canonical ring of a smooth projective variety is finitely generated.

Algebraic Geometry · Mathematics 2019-12-19 Paolo Cascini , Vladimir Lazić

We establish basic results on subrings of finite commutative rings and closely related rings. Among other applications we calculate the number of maximal subrings of a finite commutative local ring.

Commutative Algebra · Mathematics 2017-12-07 Francisco Franco Munoz

Degree bounds for algebra generators of invariant rings are a topic of longstanding interest in invariant theory. We study the analogous question for field generators for the field of rational invariants of a representation of a finite…

Commutative Algebra · Mathematics 2024-06-17 Ben Blum-Smith , Thays Garcia , Rawin Hidalgo , Consuelo Rodriguez

We count the number of irreducible polynomials in several variables of a given degree over a finite field. The results are expressed in terms of a generating series, an exact formula and an asymptotic approximation. We also consider the…

Algebraic Geometry · Mathematics 2009-10-16 Arnaud Bodin
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