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In this note, for the multiplier ideal sheaves with weights $\log\sum_{i}|z_{i}|^{a_{i}}$, we present the sufficient and necessary condition of the existence of decreasing equisingular approximations with analytic singularities.

Complex Variables · Mathematics 2018-07-10 Qi'an Guan

In this article, we will characterize the multiplier ideal sheaves with weights of log canonical threshold one by restricting the weights to complex regular surface.

Complex Variables · Mathematics 2016-04-13 Qi'an Guan , Zhenqian Li

A reduced divisor on a nonsingular variety defines the sheaf of logarithmic 1-forms. We introduce a certain coherent sheaf whose double dual coincides with this sheaf. It has some nice properties, for example, the residue exact sequence…

Algebraic Geometry · Mathematics 2007-05-23 Igor V. Dolgachev

In this article, we first establish an $L^2$-type Dolbeault isomorphism for the sheaf of logarithmic differential forms twisted by the multiplier ideal sheaf. By using this isomorphism and $L^2$-estimates equipped with a singular Hermitian…

Complex Variables · Mathematics 2022-11-21 Yuta Watanabe

In this paper we establish a Nadel-type vanishing theorem on a projective manifold $X$ concerning the asymptotic multiplier ideal sheaf.

Algebraic Geometry · Mathematics 2021-07-20 Jingcao Wu

This note states a conjecture for Nevanlinna theory or diophantine approximation, with a sheaf of ideals in place of the normal crossings divisor. This is done by using a correction term involving a multiplier ideal sheaf. This new…

Number Theory · Mathematics 2007-09-24 Paul Vojta

We introduce a new type of pluricomplex Green function which has a logarithmic pole along a complex subspace A of a complex manifold X. It is the largest negative plurisubharmonic function on X whose Lelong number is at least the Lelong…

Complex Variables · Mathematics 2007-05-23 Finnur Larusson , Ragnar Sigurdsson

Let $X$ be a weakly pseudoconvex manifold and $L\longrightarrow X$ be a holomorphic line bundle with a singular positive Hermitian metric $h$. In this article, we provide a points separation theorem and an embedding for the adjoint linear…

Complex Variables · Mathematics 2025-12-16 Yuta Watanabe

The goal of this note is to present some recent results of our research concerning multiplier ideal sheaves on complex spaces and singularities of plurisubharmonic functions. We firstly introduce multiplier ideal sheaves on complex spaces…

Complex Variables · Mathematics 2020-03-27 Zhenqian Li

In this article, we obtain two sharp equality conditions in the restriction formula on complex singularity exponents: an equality between the codimension of the zero variety of related multiplier ideal sheaves and the relative codimension…

Complex Variables · Mathematics 2015-10-27 Qi'an Guan

In this paper we deal with nonnegative distributional supersolutions for a class of linear elliptic equations involving inverse-square potentials and logarithmic weights. We prove sharp nonexistence results.

Analysis of PDEs · Mathematics 2010-09-15 Mouhamed Moustapha Fall , Roberta Musina

We study semilinear elliptic inequalities with a potential on infinite graphs. Given a distance on the graph, we assume an upper bound on its Laplacian, and a growth condition on a suitable weighted volume of balls. Under such hypotheses,…

Analysis of PDEs · Mathematics 2023-06-07 Dario Daniele Monticelli , Fabio Punzo , Jacopo Somaglia

We show that for any uniformly elliptic fully nonlinear second-order equation with bounded measurable "coefficients" and bounded "free" term one can find an approximating equation which has a unique continuous and having the second…

Analysis of PDEs · Mathematics 2012-04-03 N. V. Krylov

We establish a relation between Lelong numbers and the full mass property of relative non-pluripolar products. We use it to show that if the restricted volume of a big cohomology class $\alpha$ in a compact K\"ahler $n$-dimensional manifold…

Complex Variables · Mathematics 2025-08-21 Duc-Bao Nguyen , Shuang Su , Duc-Viet Vu

We show that a compact complex manifold $X$ has no non-trivial nef $(1,1)$-classes if there is a non-isomorphic bimeromorphic map $f\colon X\dashrightarrow Y$ isomorphic in codimension $1$ to a compact K\"ahler manifold $Y$ with…

Algebraic Geometry · Mathematics 2025-02-26 Jia Jia , Sheng Meng

This paper proves the non-existence of common K\"ahler submanifolds of the complex Euclidean space and the symmetrized polydisc endowed with their canonical metrics.

Complex Variables · Mathematics 2018-03-20 Guicong Su , Yanyan Tang , Zhenhan Tu

We show that there are no symmetric non-zero biderivations on perfect Lie algebras of finite dimension over a field of characteristic zero. We show that this is equivalent to show that every symmetric biderivation on a finite-dimensional…

Rings and Algebras · Mathematics 2025-03-18 Ignacio Bajo , Saïd Benayadi , Hassan Oubba

In a previous paper with the same title, we gave an upper bound for the exponent of uniform rational approximation to a quadruple of $\mathbb{Q}$-linearly independent real numbers in geometric progression. Here, we explain why this upper…

Number Theory · Mathematics 2025-04-29 Damien Roy

This paper is devoted to the study of non-existence of certain type of convex functions on a Riemannian manifold with a pole. To this end, we have developed the notion of odd and even function on a Riemannian manifold with a pole and proved…

Differential Geometry · Mathematics 2019-07-08 Absos Ali Shaikh , Chandan Kumar Mondal , Izhar Ahmad

We show that a Skoda complex with a general plurisubharmonic weight function is exact if its 'degree' is sufficiently large. This answers a question of Lazarsfeld and implies that not every integrally closed ideal is equal to a multiplier…

Algebraic Geometry · Mathematics 2014-01-22 Dano Kim
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