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

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12 papers · 1 filter

math.AG2024★ 5 cited

Boundedness of complements for log Calabi-Yau threefolds

Guodu Chen, Jingjun Han, Qingyuan Xue

In this paper, we study the theory of complements, introduced by Shokurov, for Calabi-Yau type varieties with the coefficient set $[0, 1]$ . We show that there exists a finite set of…

math.AG2022★ 5 cited

ACC for minimal log discrepancies of terminal threefolds

Jingjun Han, Jihao Liu, Yujie Luo

We prove that the ACC conjecture for minimal log discrepancies holds for threefolds in $[1 - δ, + \infty)$ , where $δ > 0$ only depends on the coefficient set. We also study Reid's genera…

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

On a generalized canonical bundle formula for generically finite morphisms

Jingjun Han, Wenfei Liu

We prove a canonical bundle formula for generically finite morphisms in the setting of generalized pairs (with $R$ -coefficients). This complements Filipazzi's canonical bu…

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…