Jingjun Han

activity

20122020

most citedEffective birationality for sub-pairs with real coefficients

2 citations · 3 across the 4 of their papers we have counts for

collaborators

6 papers

math.AG2020★ 2 cited

Effective birationality for sub-pairs with real coefficients

Jingjun Han, Jihao Liu

For $ε$ -lc Fano type varieties $X$ of dimension $d$ and a given finite set $Γ$ , we show that there exists a positive integer $m_{0}$ which only depends on $ε, d$ and $Γ$ , such that bo…

math.AG2020

Boundedness of $(ε, n)$ -Complements for Surfaces

Guodu Chen, Jingjun Han

We show the existence of $(ε, n)$ -complements for $(ε, R)$ -complementary surface pairs when the coefficients of boundaries belong to a DCC set.

math.AG2019

Bounded deformations of $(ε, δ)$ -log canonical singularities

Jingjun Han, Jihao Liu, Joaquín Moraga

In this paper we study $(ε, δ)$ -lc singularites, i.e. $ε$ -lc singularities admitting a $δ$ -plt blow-up. We prove that $n$ -dimensional $(ε, δ)$ -lc singularities are bounded up to a de…

math.AG2019

ACC for minimal log discrepancies of exceptional singularities

Jingjun Han, Jihao Liu, V. V. Shokurov

We prove the existence of $n$ -complements for pairs with DCC coefficients and the ACC for minimal log discrepancies of exceptional singularities. In order to prove these results, w…

math.AG2017★ 1 cited

On Fujita's conjecture for pseudo-effective thresholds

Jingjun Han, Zhan Li

We show Fujita's spectrum conjecture for $ε$ -log canonical pairs and Fujita's log spectrum conjecture for log canonical pairs. Then, we generalize the pseudo-effective threshold of…

cs.LO2012

A Simple Quantifier-free Formula of Positive Semidefinite Cyclic Ternary Quartic Forms