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We show that the Friedlander-Mazur conjecture holds for the product of an elliptic curve with some smooth projective variety of dimension 3. Moreover, we show that the Friedlander-Mazur conjecture is stable under a surjective map. As…

Algebraic Geometry · Mathematics 2021-11-05 Jin Cao , Wenchuan Hu

We prove a number of basic vanishing results for modified diagonal classes. We also obtain some sharp results for modified diagonals of curves and abelian varieties, and we prove a conjecture of O'Grady about modified diagonals on double…

Algebraic Geometry · Mathematics 2014-05-08 Ben Moonen , Qizheng Yin

Heavy Quark Effective Theory splits a heavy quark momentum into a large fixed momentum and a variable residual momentum, p = m_Q v + k. It thereby suffers a redundancy of description corresponding to small changes in the choice of the fixed…

High Energy Physics - Phenomenology · Physics 2009-09-15 Raman Sundrum

We survey and investigate some computational aspects of the Fourier-Mukai transform.

High Energy Physics - Theory · Physics 2008-11-26 Nikolaj M. Glazunov

For a smooth projective variety $X$ with exceptional structure sheaf, and $\operatorname{Hilb}^2X$ the Hilbert scheme of two points on $X$, we show that the Fourier-Mukai functor $\mathbf{D}^{\mathrm{b}}(X)…

Algebraic Geometry · Mathematics 2019-09-17 Pieter Belmans , Lie Fu , Theo Raedschelders

We present counterexamples to Fujita's conjecture in positive characteristics. Precisely, we show that over any algebraically closed field $k$ of characteristic $p>0$ and for any positive integer $m$, there exists a smooth projective…

Algebraic Geometry · Mathematics 2022-01-06 Yi Gu , Lei Zhang , Yongming Zhang

This paper is a sequel to [3]. We formulate a natural algebraic geometry conjecture, give some of its number theoretic and analytical consequences, and show that those can be used to get further advances in wave turbulence theory.

Number Theory · Mathematics 2024-12-24 Sergei Vlăduţ

We prove some Liouville-type theorems for positive harmonic functions on compact Riemannian manifolds with nonnegative Ricci curvature and strictly convex boundary, thereby confirming some cases of Wang's conjecture (J. Geom. Anal. 31,…

Analysis of PDEs · Mathematics 2026-04-23 Xiaohan Cai

It is shown that the $n$-dimensional Jacobian conjecture over algebraic number fields may be considered as an existence problem of integral points on affine curves. More specially, if the Jacobian conjecture over $\mathbb{C}$ is false, then…

Algebraic Geometry · Mathematics 2020-11-20 Nguyen Van Chau

We prove effective versions of algebraic and analytic Lang's conjectures for product-quotient surfaces of general type with $P_g=0$ and $c_1^2=c_2$.

Algebraic Geometry · Mathematics 2019-06-06 Julien Grivaux , Juliana Restrepo Velasquez , Erwan Rousseau

We prove that for smooth projective threefolds whose anticanonical divisors are nef, the second Chern classes are pseudo-effective under a weak assumption. As an application, the pseudo-effectivity of the second Chern classes implies that…

Algebraic Geometry · Mathematics 2007-05-23 Qihong Xie

In this paper we discuss a general framework in which we present a new conjecture, due to Wenhua Zhao, the Image Conjecture. This conjecture implies the Generalized Vanishing Conjecture and hence the Jacobian Conjecture. Crucial ingredient…

Algebraic Geometry · Mathematics 2010-07-01 Arno van den Essen

The author introduces a conjecture about Makar-Limanov invariants of affine unique factorization domains over a field of characteristic zero. Then the author finds that the conjecture does not always hold when $\mathbbm{k}$ is not…

Commutative Algebra · Mathematics 2020-10-13 Ziqi Liu

Contrary to the expected behavior, we show the existence of non-invertible deformations of Lie algebras which can generate invariants for the coadjoint representation, as well as delete cohomology with values in the trivial or adjoint…

High Energy Physics - Theory · Physics 2008-11-26 R. Campoamor-Stursberg

Orlov's famous representability theorem asserts that any fully faithful exact functor between the bounded derived categories of coherent sheaves on smooth projective varieties is a Fourier-Mukai functor. In this paper we show that this…

Algebraic Geometry · Mathematics 2019-03-05 Alice Rizzardo , Michel Van den Bergh , Amnon Neeman

We consider non-commutative deformations of sheaves on algebraic varieties. We develop some tools to determine parameter algebras of versal non-commutative deformations for partial simple collections and the structure sheaves of smooth…

Algebraic Geometry · Mathematics 2021-08-31 Yujiro Kawamata

We prove the Kawamata-Viehweg vanishing theorem for a large class of divisors on surfaces in positive characteristic. By using this vanishing theorem, Reider-type theorems and extension theorems of morphisms for normal surfaces are…

Algebraic Geometry · Mathematics 2023-06-22 Makoto Enokizono

The question of the anomalies in the effective theory of heavy quarks is investigated at two different levels. Firstly, it is shown that none of the symmetries of this effective theory contains an anomaly. The existence of a new `$ \gamma _…

High Energy Physics - Phenomenology · Physics 2009-10-22 J. Soto , R. Tzani

Let X be a surface whose Cox ring has a single relation satisfying moreover a kind of linearity property. Under a simple assumption, we show that the geometric Manin's conjectures hold for some degrees lying in the dual of the effective…

Algebraic Geometry · Mathematics 2012-05-17 David Bourqui

We obtain some Liouville type theorems for positive harmonic functions on compact Riemannian manifolds with nonnegative Ricci curvature and strictly convex boundary and partially verifies Wang's conjecture (J. Geom. Anal. 31 (2021)). For…

Analysis of PDEs · Mathematics 2025-09-12 Xiaohan Cai