We show that on almost complex surfaces plurisubharmonic functions can be locally approximated by smooth plurisubharmonic functions. The main tool is the Poletsky type theorem due to U. Kuzman.
Plurisubharmonic and holomorphic functions relative to the plurifine topology
引入了多重细多重次调和函数和多重细全纯函数的弱和强概念。强者意味着弱者。进一步研究了弱概念。一个函数f是弱多重细多重次调和的当且仅当f o h对所有复仿射线性映射h是细次调和的。因此,这类函数的点态上确界在plurifine拓扑中的正则化是弱plurifine plurisubharmonic的,并且它至多在一个多极集上不同于点态上确界。在弱多细全纯映射的复合下,弱多细次调和性和弱多细全纯性保持不变。
In this paper we prove a criterion for plurisubharmonic functions in terms of integral mean by complex ellipsoids. Moreover, by using the criterion we prove an analogue of Blaschke-Privalov theorem for plurisubharmonic functions.
Given a negative plurisubharmonic function $ϕ$ in a bounded pseudoconvex domain of ${\mathbb C}^n$, we introduce and study its residual function $g_ϕ$ determined by the asymptotic behavior of $ϕ$ near its singularity points, both inside the domain and on its boundary. For certain choices of $ϕ$, the function $g_ϕ$ coincides with different versions of pluricomplex Green functions. The considerations are motivated by a problem on when two given plurisubharmonic functions can be connected by a plurisubharmonic geodesic.
Let $Ω=\{r<0\}\subset\mathbb C^2$, with $r$ plurisubharmonic on $bΩ=\{r=0\}$. Let $ρ$ be another defining function for $Ω$. A formula for the determinant of the complex Hessian of $ρ$ in terms of $r$ is computed. This formula is used to give necessary and sufficient conditions that make $ρ$ (locally) plurisubharmonic.
We give a geometric condition on a compact subset of a complex manifold which is necessary and sufficient for the existence of a smooth strictly plurisubharmonic function defined in a neighbourhood of this set.
We prove that for every $n \ge 2$, there exists a pseudoconvex domain $Ω\subset \mathbb{C}^n$ such that $\mathfrak{c}^0(Ω) \subsetneq \mathfrak{c}^1(Ω)$, where $\mathfrak{c}^k(Ω)$ denotes the core of $Ω$ with respect to $\mathcal{C}^k$-smooth plurisubharmonic functions on $Ω$. Moreover, we show that there exists a bounded continuous plurisubharmonic function on $Ω$ that is not the pointwise limit of a sequence of $\mathcal{C}^1$-smooth bounded plurisubharmonic functions on $Ω$.
We show how the formalism of Levi currents on complex manifolds, as introduced by Sibony, can be used to study the analytic structure of singular sets associated to families of plurisubharmonic functions, in the sense of Slodkowski.
This paper studies the complex Monge-Ampère equations for $\mathcal F$-plurisubharmonic functions in bounded $\mathcal F$-hyperconvex domains. We give sufficient conditions for this equation to solve for measures with a singular part.
Integration by parts for plurisubharmonic functions
Institute of Mathematics, Vietnam Academy of Science and Technology(越南科学院数学研究所);Department of Mathematics, Hanoi National University of Education(河内国家教育大学数学系)
We investigate the question of existence of plurisubharmonic defining functions for smoothly bounded, pseudoconvex domains in $\mathbb{C}^2$. In particular, we construct a family of simple counterexamples to the existence of plurisubharmonic smooth local defining functions. Moreover, we give general criteria equivalent to the existence of plurisubharmonic smooth defining functions on or near the boundary of the domain. These equivalent characterizations are then explored for some classes of domains.