Yongnam Lee

activity

20242026

collaborators

3 papers

math.AG2026

Deformation of pairs of $P^{3}$ and hypersurfaces

Jungkai Chen, Yongnam Lee, Phin-Sing Soo

Motivated by DeVleming's work on moduli of surfaces in $P^{3}$ and Chen-Hu-Jiang's work on moduli of threefolds with volume $2$ and geometric genus $4$ , we study the deforma…

math.AG2025

Morphisms from a very general hypersurface

Yongnam Lee, Yujie Luo, De-Qi Zhang

Let $X$ be a very general hypersurface of degree $d$ in the projective $(n + 1)$ -space with $n \geq 3$ , and $f : X \to Y$ a non-birational surjective morphism to a normal projective va…

math.AG2024

Bigness of the tangent bundle of a Fano threefold with Picard number two

Hosung Kim, Jeong-Seop Kim, Yongnam Lee

In this paper, we study the positivity property of the tangent bundle $T_{X}$ of a Fano threefold $X$ with Picard number 2. We determine the bigness of the tangent bundle of the whol…

Deformation of pairs of P3 and hypersurfaces

Morphisms from a very general hypersurface

Bigness of the tangent bundle of a Fano threefold with Picard number two

Deformation of pairs of $P^{3}$ and hypersurfaces