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We prove Vojta's generalized abc conjecture for algebraic tori over function fields with exceptional sets that can be determined effectively. Additionally, we establish a version of the conjecture for toric varieties. As an application, we…

Number Theory · Mathematics 2023-10-20 Ji Guo , Khoa D. Nguyen , Chia-Liang Sun , Julie Tzu-Yueh Wang

We establish a result of Bombieri-Vinogradov type for the Dirichlet coefficients at prime ideals of the standard $L$-function associated to a self-dual cuspidal automorphic representation $\pi$ of $\mathrm{GL}_n$ over a number field $F$…

Number Theory · Mathematics 2023-05-03 Yujiao Jiang , Guangshi Lü , Jesse Thorner , Zihao Wang

In the present paper we introduce and study the notion of an equivariant pretheory: basic examples include equivariant Chow groups, equivariant K-theory and equivariant algebraic cobordism. To extend this set of examples we define an…

Algebraic Geometry · Mathematics 2013-02-07 Stefan Gille , Kirill Zainoulline

In this paper we develop a strategy and some technical tools for proving the Andre-Oort conjecture. We give lower bounds for the degrees of Galois orbits of geometric components of special subvarieties of Shimura varieties, assuming the…

Number Theory · Mathematics 2013-09-12 Emmanuel Ullmo , Andrei Yafaev

In this paper, we introduce Kasparov's bivariant K-theory that is equivariant under symmetries of a C*-tensor category. It is motivated by some dualities in quantum group equivariant KK-theory, and the classification theory of inclusions of…

Operator Algebras · Mathematics 2025-03-19 Yuki Arano , Kan Kitamura , Yosuke Kubota

We give a new simple proof of boundedness of the family of semistable sheaves with fixed numerical invariants on a fixed smooth projective variety. In characteristic zero our method gives a quick proof of Bogomolov's inequality for…

Algebraic Geometry · Mathematics 2023-01-31 Adrian Langer

We study Torelli-type theorems in the Zariski topology for varieties of dimension at least 2, over arbitrary fields. In place of the Hodge structure, we use the linear equivalence relation on Weil divisors. Using this setup, we prove a…

Algebraic Geometry · Mathematics 2021-01-14 János Kollár , Max Lieblich , Martin Olsson , Will Sawin

For a countable discrete group $G$, we construct a new and concrete model for the equivariant topological $K$-homology theory of $G$, which is defined for all $G$-actions, not just for proper $G$-actions. The construction of our model…

K-Theory and Homology · Mathematics 2022-09-07 Kun Wang

We prove equivalences of derived categories for the various mirrors in the Batyrev-Borisov construction. In particular, we obtain a positive answer to a conjecture of Batyrev and Nill. The proof involves passing to an associated category of…

Algebraic Geometry · Mathematics 2016-10-18 David Favero , Tyler L. Kelly

An algebraic version of a theorem due to Quillen is proved. More precisely, for a ground field k we consider the motivic stable homotopy category SH(k) of P^1-spectra equipped with the symmetric monoidal structure described in…

Algebraic Geometry · Mathematics 2007-09-27 I. Panin , K. Pimenov , O. Röndigs

This article is a survey on the cohomology of a reductive algebraic group with coefficients in twisted representations. A large part of the paper is devoted to the advances obtained by the theory of strict polynomial functors initiated by…

K-Theory and Homology · Mathematics 2018-10-04 Antoine Touzé

In this paper we study the global boundedness for the solutions to a class of possibly degenerate parabolic equations by De-Giorgi's iteration. As applications, we show the existence of weak solutions for possibly degenerate stochastic…

Analysis of PDEs · Mathematics 2021-05-18 Xicheng Zhang

Let $A(\ell,n,k)$ denote the number of $\ell$-tuples of commuting permutations of $n$ elements whose permutation action results in exactly $k$ orbits or connected components. We provide a new proof of an explicit formula for $A(\ell,n,k)$…

Combinatorics · Mathematics 2024-04-17 Abdelmalek Abdesselam , Pedro Brunialti , Tristan Doan , Philip Velie

We prove a version of equivariant split generation of Fukaya category when a symplectic manifold admits a free action of a finite group $G$. Combining this with some generalizations of Seidel's algebraic frameworks from Seidel's book, we…

Symplectic Geometry · Mathematics 2015-01-27 Weiwei Wu

We develop a finite KKG-theory of C*-algebras following Arlettaz- H.Inassaridze's approach to finite algebraic K-theory. The Browder- Karoubi-Lambre's theorem on the orders of the elements for finite algebraic K-theory is extended to finite…

K-Theory and Homology · Mathematics 2009-10-01 Hvedri Inassaridze , Tamaz Kandelaki

We prove results towards the equidistribution of certain families of periodic torus orbits on homogeneous spaces, with particular focus on the case of the diagonal torus acting on quotients of $\PGL_n(\R)$. After attaching to each periodic…

Dynamical Systems · Mathematics 2007-05-23 Manfred Einsiedler , Elon Lindenstrauss , Philippe Michel , Akshay Venkatesh

We study comodule functors for comonads arising from mixed distributive laws. Their Galois property is reformulated in terms of a (so-called) regular arrow in Street's bicategory of comonads. Between categories possessing equalizers, we…

Rings and Algebras · Mathematics 2012-01-27 Gabriella Böhm , Claudia Menini

In this note, we give a short proof of the Torelli theorem for cubic fourfolds that relies on the global Torelli theorem for irreducible holomorphic symplectic varieties proved by Verbitsky.

Algebraic Geometry · Mathematics 2012-09-21 François Charles

By analyzing degeneracy loci over projectivized vector bundles, we recompute the degree of the discriminant locus of a vector bundle and provide a new proof of the Bogomolov instability theorem.

Algebraic Geometry · Mathematics 2023-01-13 Hirotachi Abo , Robert Lazarsfeld , Gregory G. Smith

We address the distribution properties of points of small height on proper toric varieties and applications to the related Bogomolov property. We introduce the notion of monocritical toric metrized divisor and we prove that equidistribution…

Number Theory · Mathematics 2015-09-04 José Ignacio Burgos Gil , Patrice Philippon , Juan Rivera-Letelier , Martín Sombra
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