activity
20112026
most citedNew characterizations of plurisubharmonic functions and positivity of direct image sheaves

20 citations · 61 across the 23 of their papers we have counts for

collaborators

25 papers

math.CV2026

Invariance of plurigenera for Kähler families with nef canonical bundles

Fusheng Deng, Jiafu Ning, Zhiwei Wang +1

Let be a proper holomorphic submersion from a Kähler manifold . We prove that, if is nef for every , then …

math.CV2025

Characterization of negative line bundles whose Grauert blow-down are quadratic transforms

Fusheng Deng, Yinji Li, Qunhuan Liu +1

We show that the Grauert blow-down of a holomorphic negative line bundle over a compact complex space is a quadratic transform if and only if is very ample and $(k_0+1…

math.CV2025

Log truncated threshold and zero mass conjecture

Fusheng Deng, Yinji Li, Qunhuan Liu +2

For plurisubharmonic functions and lying in the Cegrell class of and respectively such that the Lelong number of at the origin vanishes, w…

math.CV2024

Multiplicites and modifications, and singularities associated to blowing down negative vector bundles

Fusheng Deng, Yinji Li, Qunhuan Liu +1

We first present the mixed Hilbert-Samuel multiplicities of analytic local rings over \mathbb{C} as generalized Lelong numbers and further represent them as intersection numbers in…

math.AG2024

Uniqueness of irreducible desingularization of singularities associated to negative vector bundles

Fusheng Deng, Yinji Li, Qunhuan Liu +1

We prove that the irreducible desingularization of a singularity given by the Grauert blow down of a negative holomorphic vector bundle over a compact complex manifold is unique up…

math.CV2023

Approximation and extension of Hermitian metrics on holomorphic vector bundles over Stein manifolds

Fusheng Deng, Jiafu Ning, Zhiwei Wang +1

We show that a singular Hermitian metric on a holomorphic vector bundle over a Stein manifold which is negative in the sense of Griffiths (resp. Nakano) can be approximated by a se…

math.CV2022

Curvature strict positivity of direct image bundles associated to pseudoconvex families of domains

Fusheng Deng, Jinjin Hu, Xiangsen Qin

We consider the curvature strict positivity of the direct image bundle associated to a pseudoconvex family of bounded domains. The main result is that the curvature of the direct i…

math.CV2022

Linear isometric invariants of bounded domains

Fusheng Deng, Jiafu Ning, Zhiwei Wang +1

We introduce two new conditions for bounded domains, namely -completeness and boundary blow down type, and show that, for two bounded domains and that are -co…

math.CV2020

Characterization of Curvature positivity of Riemannian metrics on flat vector bundles

Fusheng Deng, Xujun Zhang

We give a characterization of Nakano positivity of Riemannian flat vector bundles over bounded domains in terms of solvability of the equation with certa…

math.CV2020★ 2 cited

Curvature positivity of invariant direct images of Hermitian vector bundles

Fusheng Deng, Jinjin Hu, Weiwen Jiang

We prove that the invariant part, with respect to a compact group action satisfying certain condition, of the direct image of a Nakano positive Hermitian holomorphic vector bundle…

math.CV2020★ 10 cited

Positivity of holomorphic vector bundles in terms of -conditions of

Fusheng Deng, Jiafu Ning, Zhiwei Wang +1

We study the positivity properties of Hermitian (or even Finsler) holomorphic vector bundles in terms of -estimates of and -extensions of holomorphic objec…

math.SG2019

Hamiltonian Carleman approximation and the density property for coadjoint orbits

Fusheng Deng, Erlend Fornæss Wold

For a complex Lie group with a real form , we prove that any Hamiltionian automorphism of a coadjoint orbit of whose connected components…

math.CV2019

Characterizations of plurisubharmonic functions

Fusheng Deng, Jiafu Ning, Zhiwei Wang

We give characterizations of (quasi-)plurisubharmonic functions in terms of -estimates of and -extensions of holomorphic functions.

math.CV2019★ 3 cited

Linear invariants of complex manifolds and their plurisubharmonic variations

Fusheng Deng, Zhiwei Wang, Liyou Zhang +1

For a bounded domain and a real number , we denote by the space of integrable holomorphic functions on , equipped with the - pseudonorm. We prove th…

math.CV2018

A new proof of Kiselman's minimum principle for plurisubharmonic functions

Fusheng Deng, Zhiwei Wang, Liyou Zhang +1

We give a new proof of Kiselman's minimum principle for plurisubharmonic functions, based on Ohsawa-Takegoshi extension theorem.

math.CV2018★ 20 cited

New characterizations of plurisubharmonic functions and positivity of direct image sheaves

Fusheng Deng, Zhiwei Wang, Liyou Zhang +1

We give new characterizations of plurisubharmonic functions and Griffiths positivity of holomorphic vector bundles with singular Finsler metrics. As applications, we present a diff…

math.CV2017

Flat bundles over some compact complex manifolds

Fusheng Deng, John Erik Fornæss

We construct examples of flat fiber bundles over the Hopf surface such that the total spaces have no pseudoconvex neighborhood basis, admit a complete Kähler metric, or are hyperco…

math.CV2016★ 14 cited

On biholomorphisms between bounded quasi-Reinhardt domains

Fusheng Deng, Feng Rong

In this paper, we define what is called a quasi-Reinhardt domain and study biholomorphisms between such domains. We show that all biholomorphisms between two bounded quasi-Reinhard…

math.CV2016★ 4 cited

Exposing boundary points of strongly pseudoconvex subvarieties in complex spaces

Fusheng Deng, John Erik Fornaess, Erlend Fornaess Wold

We prove that all locally exposable points in a Stein compact in a complex space can be exposed along a given curve to a given real hypersurface. Moreover, the exposing map for a b…

math.CV2013★ 1 cited

Properties of squeezing functions and global transformations of bounded domains

Fusheng Deng, Qi'an Guan, Liyou Zhang

The central purpose of the present paper is to study boundary behavior of squeezing functions on bounded domains. We prove that the squeezing function of a strongly pseudoconvex do…

math.AG2012★ 1 cited

Fermionic gluing principle of the topological vertex

Fusheng Deng, Jian Zhou

We will establish the fermionic gluing principle of the topological vertex, that is, provided the framed ADKMV conjecture, the generating functions of the Gromov-Witten invariants…

math.CV2012

Properties of squeezing functions and geometry of bounded domains

Fusheng Deng, Qi'an Guan, Liyou Zhang

In this article we continue the study of properties of squeezing functions and geometry of bounded domains. The limit of squeezing functions of a sequence of bounded domains is stu…

math.AG2012★ 1 cited

On fermionic representation of the Gromov-Witten invariants of the resolved Conifold

Fusheng Deng, Jian Zhou

We prove that the fermionic form of the generating function of the Gromov-Witten invariants of the resolved conifold is a Bogoliubov transform of the fermionic vacuum; in particula…

math.AG2011★ 4 cited

On fermionic representation of the framed topological vertex

Fusheng Deng, Jian Zhou

The Gromov-Witten invariants of \mathbb{C}^3 with branes is encoded in the topological vertex which has a very complicated combinatorial expression. A simple formula for the topolo…