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19962023
most citedSeveri Degrees in Cogenus 4

12 citations · 23 across the 18 of their papers we have counts for

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13 papers · 1 filter

math.CV2023

An application of adjoint ideal sheaves to injectivity and extension theorems

Tsz On Mario Chan, Young-Jun Choi

This note reviews the authors' approach to Fujino's conjecture, i.e. the injectivity theorem for lc pairs on compact Kähler manifolds, via the use of adjoint ideal sheaves coupled…

math.CV2022

A characterization of the unit ball by a Kähler-Einstein potential

Young-Jun Choi, Kang-Hyurk Lee, Aeryeong Seo

We will show that a universal covering of a compact Kähler manifold with ample canonical bundle is the unit ball if it admits a global potential function of the Kähler-Einstein met…

math.CV2022★ 2 cited

On an injectivity theorem for log-canonical pairs with analytic adjoint ideal sheaves

Tsz On Mario Chan, Young-Jun Choi

As an application of the residue functions corresponding to the lc-measures developed by the authors, the proof of the injectivity theorem on compact Kähler manifolds for plt pairs…

math.CV2020

Existence of a complete holomorphic vector field via the Kähler-Einstein metric

Young-Jun Choi, Kang-Hyurk Lee

In this paper, we study the existence of a complete holomorphic vector fields on a strongly pseudoconvex complex manifold admitting a negatively curved complete Kähler-Einstein met…

math.CV2020

A certain Kähler potential of the Poincaré metric and its characterization

Young-Jun Choi, Kang-Hyurk Lee, Sungmin Yoo

We will show a rigidity of a Kähler potential of the Poincaré metric with a constant length differential.

math.CV2020

Fiberwise Kähler-Ricci flows on families of bounded strongly pseudoconvex domains

Young-Jun Choi, Sungmin Yoo

Let be the projection map onto the second factor and let be a domain in such that for , every…

math.CV2020

Semi-continuity of the Diederich-Fornaess and Steinness indices

Young-Jun Choi, Jihun Yum

In this paper, we prove the semi-continuity theorem of Diederich-Fornæss index and Steinness index under a smooth deformation of pseudoconvex domains in Stein manifolds.

math.CV2019★ 8 cited

Extension with log-canonical measures and an improvement to the plt extension of Demailly--Hacon--Paun

Tsz On Mario Chan, Young-Jun Choi

With a view to proving the conjecture of "dlt extension" related to the abundance conjecture, a sequence of potential candidates for replacing the Ohsawa measure in the Ohsawa-Take…

math.CV2019★ 1 cited

Holomorphic family of strongly pseudoconvex domains in a Kähler manifold

Young-Jun Choi, Sungmin Yoo

Let be a surjective holomorphic mapping between Kähler manifolds. Let be a bounded smooth domain in such that every generic fiber …

math.CV2018

Extension of the curvature form of the relative canonical line bundle on families of Calabi-Yau manifolds and applications

Young-Jun Choi, Georg Schumacher

Given a proper, open, holomorphic map of Kähler manifolds, whose general fibers are Calabi-Yau manifolds, the volume forms for the Ricci-flat metrics induce a hermitian metric on t…

math.CV2017

Kähler forms for families of Calabi-Yau manifolds

Matthias Braun, Young-Jun Choi, Georg Schumacher

Kähler-Einstein metrics for polarized families of Calabi-Yau manifolds define a natural hermitian metric on the relative canonical bundle. The fact that the curvature form is equal…

math.CV2015

Positivity of direct images of fiberwise Ricci-flat metrics on Calabi-Yau fibrations

Matthias Braun, Young-Jun Choi, Georg Schumacher

Let be a Kähler manifold which is fibered over a complex manifold such that every fiber is a Calabi-Yau manifold. Let be a fixed Kähler form on . By Yau's theorem, t…

math.CV2015

Subharmonicity of the variations of Kähler-Einstein metrics on pseudoconvex domains

Young-Jun Choi

This paper is a sequel to \cite{Choi} in Math. Ann. In that paper we studied the subharmonicity of Kähler-Einstein metrics on strongly pseudoconvex domains of dimension greater tha…