English
Related papers

Related papers: Zero-cycles with modulus and relative $K$-theory

200 papers

Given a smooth surface $X$ over a field and an effective Cartier divisor $D$, we provide an exact sequence connecting $CH_0(X,D)$ and the relative $K$-group $K_0(X,D)$. We use this exact sequence to answer a question of Kerz and Saito…

Algebraic Geometry · Mathematics 2015-11-17 Amalendu Krishna

We generalize the Harnack-Thom theorem to relate the ranks of the Lawson homology groups with $\Z_2$-coefficients of a real quasiprojective variety with the ranks of its reduced real Lawson homology groups. In the case of zero-cycle group,…

Algebraic Geometry · Mathematics 2007-05-23 Jyh-Haur Teh

Let U be a smooth quasi-projective variety over a field k that is finite, the algebraic closure of a finite field or algebraically closed of characteristic 0. Let X be a suitable projective compactification of U, and D an effective divisor…

Algebraic Geometry · Mathematics 2023-11-08 Henrik Russell

We show how to make the additive Chow groups of Bloch-Esnault, Ruelling and Park into a graded module for Bloch's higher Chow groups, in the case of a smooth projective variety over a field. This yields a a projective bundle formula as well…

Algebraic Geometry · Mathematics 2007-05-23 Amalendu Krishna , Marc Levine

We revisit the computation, due to Hesselholt and Madsen, of the K-theory of truncated polynomial algebras for perfect fields of positive characteristic. The resulting K-groups are expressed in terms of big Witt vectors of the field. The…

K-Theory and Homology · Mathematics 2020-03-02 Martin Speirs

The authors establish a connection between the Quillen K-theory of certain local fields and the de Rham-Witt complex of their rings of integers with logarithmic poles at the maximal ideal. They consider fields K that are complete discrete…

K-Theory and Homology · Mathematics 2019-08-12 Lars Hesselholt , Ib Madsen

We introduce a new logarithmic structure on the moduli stack of stable curves, admitting logarithmic gluing maps. Using this we define cohomological field theories taking values in the logarithmic Chow cohomology ring, a refinement of the…

Algebraic Geometry · Mathematics 2025-06-26 David Holmes , Pim Spelier

Observations on rational Chow groups and cycle class maps in equivariant contexts.

Algebraic Geometry · Mathematics 2015-08-11 Rahbar Virk

We examine the tangent groups at the identity, and more generally the formal completions at the identity, of the Chow groups of algebraic cycles on a nonsingular quasiprojective algebraic variety over a field of characteristic zero. We…

Algebraic Geometry · Mathematics 2015-01-30 Benjamin Dribus , Jerome William Hoffman , Sen Yang

Let X be a K3 surface. We show that the Chow group CH_0(X) of 0-cycles contains a "fundamental class" c_X of degree 1 with remarkable properties: any product of divisors is proportional to this class, and so is the second Chern class…

Algebraic Geometry · Mathematics 2007-05-23 Arnaud Beauville , Claire Voisin

We show that Bloch's complex of relative zero-cycles can be used as a dualizing complex over perfect fields and number rings. This leads to duality theorems for torsion sheaves on arbitrary separated schemes of finite type over…

Algebraic Geometry · Mathematics 2008-11-26 Thomas Geisser

We prove a moving lemma for higher Chow groups with modulus, in the sense of Binda-Kerz-Saito, of projective schemes when the modulus is given by a very ample divisor. This provides one of the first cases of moving lemmas for cycles with…

Algebraic Geometry · Mathematics 2016-10-05 Amalendu Krishna , Jinhyun Park

We discuss which part of the rationalized algebraic K-theory of a group ring is detected via trace maps to Hochschild homology, cyclic homology, periodic cyclic or negative cyclic homology.

K-Theory and Homology · Mathematics 2007-05-23 Wolfgang Lueck , Holger Reich

Over a field of characteristic zero, we introduce two motivic operations on additive higher Chow cycles: analogues of the Connes boundary $B$ operator and the shuffle product on Hochschild complexes. The former allows us to apply the…

Algebraic Geometry · Mathematics 2008-02-15 Jinhyun Park

We have recently proved a precise relation between Bernstein-Sato ideals of collections of polynomials and monodromy of generalized nearby cycles. In this article we extend this result to other ideals of Bernstein-Sato type.

Algebraic Geometry · Mathematics 2021-07-07 Nero Budur , Robin van der Veer , Lei Wu , Peng Zhou

We study zero cycles on rationally connected varieties defined over characteristic zero Laurent fields with algebraically closed residue fields. We show that the degree map induces an isomorphism for rationally connected threefolds defined…

Algebraic Geometry · Mathematics 2020-10-13 Zhiyu Tian

We study the Chow group of zero-cycles on singular varieties using the cdh topology. We define the cdh versions of the zero-cycles and albanese maps. We prove results comparing these groups for a singular variety with the similar groups on…

Algebraic Geometry · Mathematics 2010-03-02 Amalendu Krishna

A general specialization map is constructed for higher Chow groups and used to prove a "going-up" theorem for algebraic cycles and their regulators. The results are applied to study the degeneration of the modified diagonal cycle of Gross…

Algebraic Geometry · Mathematics 2018-09-06 Pedro Luis del Angel , Charles Doran , Jaya Iyer , Matt Kerr , James D. Lewis , Stefan Müller-Stach , Deepam Patel

We use the elements in $K$-cohomology groups which are constructed by Flach and Mildenhall to obtain a finiteness result for the torsion part of the Chow group of a self-product of a modular curve.

Algebraic Geometry · Mathematics 2007-05-23 Kenichiro Kimura

It is a fundamental property of the Chow groups of algebraic schemes that they are contra-functorial with respect to flat morphisms between schemes. While the pullback homomorphism is easy to define at the level of algebraic cycles, the…

Algebraic Geometry · Mathematics 2022-01-25 Nitin Nitsure