National Institute for Mathematical Sciences

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20062026

most citedObservation of Gravitational Waves from a Binary Black Hole Merger

14.2k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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13 papers · 1 filter

math.AG2025

Algebraic hyperbolicity of adjoint linear systems on spherical varieties

Minseong Kwon, Haesong Seo

Moraga and Yeong conjectured that for a smooth complex projective variety $X$ of dimension $n$ , an ample line bundle $A$ on $X$ and an integer $m \geq 3 n + 1$ , very general element…

math.AG2025

A Hopf index for isotropic sections of orthogonal bundles

Martijn Kool, Jeongseok Oh, Jørgen Vold Rennemo +1

The Hopf index equates the multiplicity of a zero of a section of a vector bundle with a winding number. We give eight analogues for isotropic sections of bundles with quadratic fo…

math.AG2024★ 1 cited

Quantum Lefschetz without curves

Jeongseok Oh, Richard P. Thomas

Given one quasi-smooth derived space cut out of another by a section of a 2-term complex of bundles, we give two formulae for its virtual cycle. They are modelled on the the $p$ -fi…

math.AG2020★ 1 cited

On the first non-trivial strand of syzygies of projective schemes and Condition $N D (l)$

Jeaman Ahn, Kangjin Han, Sijong Kwak

Let $X \subset P^{n + e}$ be any $n$ -dimensional closed subscheme. We are mainly interested in two notions related to syzygies: one is the property $\mathbf{N}_{d,p}~(d\ge 2,…

math.AG2018

Multiplicative property of localized Chern characters for 2-periodic complexes

Jeongseok Oh

We prove the multiplicative property of localized Chern characters. As a direct consequence, a localized Chern character gives rise to a ring homomorphism from the K-group of perio…

math.AG2018

Lower semi-continuity of the Waldschmidt constants

Daseul Bae

In this paper, we study the Waldschmidt constant of a generalized fat point subscheme $Z = m_{1} p_{1} + \dots + m_{r} p_{r}$ of $P^{2}$ , where $p_{1}, \dots, p_{r}$ are essentially distinct po…

math.AG2017

Positivity of line bundles on general blow-ups of abelian surfaces

Sanghyeon Lee, Jaesun Shin

Let $(S, L_{S})$ be a polarized abelian surface, and let $M = c \cdot π^{*} L_{S} - α \cdot \sum_{i = 1}^{r} E_{i}$ be a line bundle on $Bl_{r} (S)$ , where $π:{\rm Bl}_{r}(S) \rightarrow S…

math.AG2017★ 1 cited

Extended Okounkov bodies and multi-point Seshadri constants

Jaesun Shin

Based on the work of Okounkov, Kaveh-Khovanskii and Lazarsfeld-Mustata independently associated a convex body, called the Okounkov body, to a big divisor on a normal projective var…

math.AG2017

Moduli map of second fundamental forms on a nonsingular intersection of two quadrics

Yewon Jeong

In [GH], Griffiths and Harris asked whether a projective complex submanifold of codimension two is determined by the moduli of its second fundamental forms. More precisely, given a…

math.AG2015★ 8 cited

Exceptional collections on Dolgachev surfaces associated with degenerations

Yonghwa Cho, Yongnam Lee

Dolgachev surfaces are simply connected minimal elliptic surfaces with $p_{g} = q = 0$ and of Kodaira dimension 1. These surfaces were constructed by logarithmic transformations of ratio…

math.AG2014★ 4 cited

Redundant blow-ups of rational surfaces with big anticanonical divisor

DongSeon Hwang, Jinhyung Park

We completely classify redundant blow-ups appearing in the theory of rational surfaces with big anticanonical divisor due to Sakai. In particular, we construct a rational surface w…

math.AG2014

Skoda division of line bundle sections and pseudo-division

Dano Kim

We first present a Skoda type division theorem for holomorphic sections of line bundles on a projective variety which is essentially the most general, compared to previous ones. It…