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We prove a restriction isomorphism for Chow groups of zero-cycles with coefficients in Milnor K-theory for smooth projective schemes over excellent henselian discrete valuation rings. Furthermore, we study torsion subgroups of these groups…

Algebraic Geometry · Mathematics 2019-10-29 Morten Lüders

In this paper we give a complete description of the integral Chow ring of the stack $\mathscr{H}_{g,1}$ of 1-pointed hyperelliptic curves, lifting relations and generators from the Chow ring of $\mathscr{H}_g$. We also give a geometric…

Algebraic Geometry · Mathematics 2021-03-12 Michele Pernice

A new section on projections of coherent sheaves from a projective space to a lower-dimensional projective space has been added. Also some of the notation has been altered to bring it into line with the joint paper with Eisenbud and…

Algebraic Geometry · Mathematics 2007-05-23 Gunnar Floystad

We consider Murre's conjectures on Chow groups for a fourfold which is a product of two curves and a surface. We give a result which concerns Conjecture D:the kernel of a certain projector is equal to the homologically trivial part of the…

Algebraic Geometry · Mathematics 2007-05-23 Kenichiro Kimura

This paper deals with the quantitative Schmidt's subspace theorem and the general from of the second main theorem, which are two correspondence objects in Diophantine approximation theory and Nevanlinna theory. In this paper, we give a new…

Number Theory · Mathematics 2022-11-15 Si Duc Quang

We describe the dimensions of Hochschild (co)homology groups of weighted projective curves over complex numbers. Surprisingly, all but one of those numbers depend only on the genus of the underlying non-weighted curve and the number of…

Algebraic Geometry · Mathematics 2025-12-10 Felix Schremmer

By an additive structure on a hypersurface S in projective space we mean an effective action of commutative unipotent group on projective space which leaves S invariant and acts on S with an open orbit. It is known that these structures…

Algebraic Geometry · Mathematics 2013-07-24 Ivan Bazhov

We organize and review some material from various sources about prepotentials, Riemann surfaces and kernels, WDVV, and the renormalization group, provide some further connections and information, and indicate some directions and problems.

High Energy Physics - Theory · Physics 2007-05-23 Robert Carroll

We exhibit several families of Fano threefolds with a multiplicative Chow-K\"unneth decomposition, in the sense of Shen-Vial. As a consequence, a certain tautological subring of the Chow ring of powers of these threefolds injects into…

Algebraic Geometry · Mathematics 2023-01-06 Robert Laterveer

In this paper, we first give some new characterizations of geodesic spheres in the hyperbolic space by the condition that hypersurface has constant weighted shifted mean curvatures, or constant weighted shifted mean curvature ratio, which…

Differential Geometry · Mathematics 2024-02-23 Weimin Sheng , Yinhang Wang , Jie Wu

We study complex analytic projective connections on surfaces in projective n-spaces in terms of the "second" neighborhood of the surface in the ambient space, and in terms of the osculating behavior of the integral curves. We also…

Differential Geometry · Mathematics 2024-05-22 Oumar Wone

We describe the cohomological Hall algebra of torsion sheaves on a weighted projective line with weights $(2, \dots, 2)$ in terms of generators and relations.

Algebraic Geometry · Mathematics 2025-02-24 Timm Peerenboom

It is unknown whether smooth cubic threefolds have an (integral Chow-theoretic) decomposition of the diagonal, or whether they are stably rational or not in general. As a first step towards making progress on these questions, we compute the…

Algebraic Geometry · Mathematics 2021-09-24 Christian Böhning , Hans-Christian Graf von Bothmer , Michel van Garrel

For a smooth quasi-projective scheme $X$ over a field $k$ with an action of a reductive group, we establish a spectral sequence connecting the equivariant and the ordinary higher Chow groups of $X$. For $X$ smooth and projective, we show…

Algebraic Geometry · Mathematics 2016-12-01 Amalendu Krishna

We prove the Hodge-D-conjecture for general K3 and Abelian surfaces. Some consequences of this result, e.g., on the levels of higher Chow groups of products of elliptic curves, are discussed.

Algebraic Geometry · Mathematics 2016-09-07 Xi Chen , James D. Lewis

Generalizing work of Schoen, we prove that the Chow group modulo $\ell$ of a product of $3$ or more very general complex elliptic curves is infinite.

Algebraic Geometry · Mathematics 2017-07-04 Humberto A. Diaz

In this paper we show the existence of an action of Chow correspondences on the cohomology of reciprocity sheaves. In order to do so, we prove a number of structural results, such as a projective bundle formula, a blow-up formula, a Gysin…

Algebraic Geometry · Mathematics 2022-06-22 Federico Binda , Kay Rülling , Shuji Saito

We prove two weighted geometric inequalities that hold for strictly mean convex and star-shaped hypersurfaces in Euclidean space. The first one involves the weighted area and the area of the hypersurface and also the volume of the region…

Differential Geometry · Mathematics 2020-01-08 Frederico Girão , Diego Rodrigues

We observe that derived equivalent K3 surfaces have isomorphic Chow motives.

Algebraic Geometry · Mathematics 2017-02-13 Daniel Huybrechts

We show that Haefliger's cohomology for etale groupoids, Moore's cohomology for locally compact groups and the Brauer group of a locally compact groupoid are all particular cases of sheaf (or Cech) cohomology for topological simplicial…

Operator Algebras · Mathematics 2007-05-23 Jean-Louis Tu