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We prove the conjecture stated by Spencer Bloch in 1975 and saying that the Albanese kernel of a smooth projective surface is 0, provided its second cohomology group is algebraic.

Algebraic Geometry · Mathematics 2025-12-16 Vladimir Guletskii

We investigate a strong version of the integral Tate conjecture for 1-cycles on the product of a curve and a surface over a finite field, under the assumption that the surface is geometrically $CH_0$-trivial. By this we mean that over any…

Algebraic Geometry · Mathematics 2021-07-27 Jean-Louis Colliot-Thélène , Federico Scavia

For a smooth projective variety X over an arbitrary field k, we discuss the surjectivity of the Albanese map from the Chow group of zero-cycles of degree zero on X to the group of rational points of the Albanese variety of X. Over…

Algebraic Geometry · Mathematics 2025-06-10 Jean-Louis Colliot-Thélène

A conjecture of Beauville and Voisin states that for an irreducible symplectic variety X, any polynomial relation between classes of divisors and the Chern classes of X which holds in cohomology already holds in the Chow groups. We verify…

Algebraic Geometry · Mathematics 2009-07-31 Andrea Ferretti

We show that the Chow group of 0-cycles on a singular projective scheme $X$ over a finite field describes the abelian extensions of its function field which are unramified over the regular locus of $X$. As a consequence, we obtain the…

Algebraic Geometry · Mathematics 2015-02-06 Amalendu Krishna

We reinterpret Diaz's construction of Chow-trivial smooth projective varieties violating the integral Hodge conjecture as the level-two case of an \(n\)-fold cup-product Bockstein mechanism. Diaz's dimension-four example is \(V=S_1\times…

Algebraic Geometry · Mathematics 2026-05-05 Abdul Rahman

This paper proposes a conjectural picture for the structure of the Chow ring of a (projective) hyper-K\"ahler variety, and the construction of a Beauville decomposition, with emphasis on the Chow group of $0$-cycles, which is endowed with a…

Algebraic Geometry · Mathematics 2015-01-14 Claire Voisin

We study zero-cycles in families of rationally connected varieties. We show that for a smooth projective scheme over a henselian discrete valuation ring the restriction of relative zero cycles to the special fiber induces an isomorphism on…

Algebraic Geometry · Mathematics 2024-07-11 Morten Lüders

We consider a $10$-dimensional family of Lehn-Lehn-Sorger-van Straten hyperk\"ahler eightfolds which have a non-symplectic automorphism of order $3$. Using the theory of finite-dimensional motives, we show that the action of this…

Algebraic Geometry · Mathematics 2021-02-15 Chiara Camere , Alberto Cattaneo , Robert Laterveer

We consider the class of singular double coverings $X \to \PP^3$ ramified in the degeneration locus $D$ of a family of 2-dimensional quadrics. These are precisely the quartic double solids constructed by Artin and Mumford as examples of…

Algebraic Geometry · Mathematics 2018-09-10 Colin Ingalls , Alexander Kuznetsov

Let H be a homology theory for algebraic varieties over a field k. To a complete k-variety X, one naturally attaches an ideal of the coefficient ring H(k). We show that, when X is regular, this ideal depends only on the upper Chow motive of…

Algebraic Geometry · Mathematics 2023-08-29 Olivier Haution

Based on Balmer's tensor triangular Chow group [2], we propose (Milnor)K-theoretic Chow groups of derived categories of schemes. These Milnor K-theoretic Chow groups recover the classical ones [6] for smooth projective varieties and can…

Algebraic Geometry · Mathematics 2018-02-08 Sen Yang

Generalized Burniat surfaces are surfaces of general type with $p_g=q$ and Euler number $e=6$ obtained by a variant of Inoue's construction method for the classical Burniat surfaces. I prove a variant of the Bloch conjecture for these…

Algebraic Geometry · Mathematics 2017-10-09 Chris Peters

We formulate a conjectural hard Lefschetz property for Chow groups, and prove this in some special cases: roughly speaking, for varieties with finite-dimensional motive, and for varieties whose self-product has vanishing middle-dimensional…

Algebraic Geometry · Mathematics 2019-08-15 Robert Laterveer

In this paper, we prove that Bloch's conjecture holds for all smooth, complex, projective surfaces with $p_g=q=0$ and $K^2=9$.

Algebraic Geometry · Mathematics 2025-08-20 Kalyan Banerjee

We prove Bloch's conjecture for numerical Campedelli surfaces with fundamental group of order $9$.

Algebraic Geometry · Mathematics 2020-04-28 Robert Laterveer

A local-global sequence for Chow groups of zero-cycles involving Brauer groups has been conjectured to be exact for all proper smooth algebraic varieties. We apply existing methods to construct several new families of varieties verifying…

Number Theory · Mathematics 2015-03-12 Yongqi Liang

The main result of this paper is the proof for elliptic modular threefolds of conjectures on the existence and structure of a filtration on the Chow groups of smooth projective varieties. In the form we prove them these conjectures were…

alg-geom · Mathematics 2008-02-03 B. Brent Gordon , Jacob P. Murre

We give a complete characterization of generic irreducibility for dispersion polynomials and Bloch varieties of periodic graph operators. More precisely, we prove that for a generic choice of edge weights and potentials, the dispersion…

Spectral Theory · Mathematics 2026-05-05 Matthew Faust , Wencai Liu

Let $X$ be a hyperk\"ahler variety with an anti-symplectic involution $\iota$. According to Beauville's conjectural "splitting property", the Chow groups of $X$ should split in a finite number of pieces such that the Chow ring has a…

Algebraic Geometry · Mathematics 2017-12-19 Robert Laterveer