ACC for minimal log discrepancies of exceptional singularities

J Han, J Liu, VV Shokurov - Peking Mathematical Journal, 2024 - Springer
In this paper, we study the ascending chain condition (ACC) conjecture for minimal log
discrepancies (mlds), proposed by the third author. We show the ACC conjecture holds for …

Boundedness of -Fano varieties with degrees and alpha-invariants bounded from below

C Jiang - arXiv preprint arXiv:1705.02740, 2017 - arxiv.org
We show that $\mathbb {Q} $-Fano varieties of fixed dimension with anti-canonical degrees
and alpha-invariants bounded from below form a bounded family. As a corollary, K …

Optimal bounds on surfaces

J Liu, VV Shokurov - arXiv preprint arXiv:2305.19248, 2023 - arxiv.org
We prove that the first gap of $\mathbb R $-complementary thresholds of surfaces is $\frac
{1}{13} $. More precisely, the largest $\mathbb R $-complementary threshold for surfaces …

Basis log canonical thresholds, local intersection estimates, and asymptotically log del Pezzo surfaces

IA Cheltsov, YA Rubinstein, K Zhang - Selecta Mathematica, 2019 - Springer
The purpose of this article is to develop techniques for estimating basis log canonical
thresholds on logarithmic surfaces. To that end, we develop new local intersection estimates …

Klt varieties with conjecturally minimal volume

B Totaro - International Mathematics Research Notices, 2024 - academic.oup.com
We construct klt projective varieties with ample canonical class and the smallest known
volume. We also find exceptional klt Fano varieties with the smallest known anti-canonical …

Four-dimensional projective orbifold hypersurfaces

G Brown, A Kasprzyk - Experimental Mathematics, 2016 - Taylor & Francis
We classify four-dimensional quasismooth weighted hypersurfaces with small canonical
class and verify a conjecture of Johnson and Kollár on infinite series of quasismooth …

Cylinders in del Pezzo surfaces

I Cheltsov, J Park, J Won - International Mathematics Research …, 2017 - ieeexplore.ieee.org
On del Pezzo surfaces, we study effective ample \BBR-divisors such that the complements of
their supports are isomorphic to \BBA^1-bundles over smooth affine curves. All considered …

Cylinders in Fano varieties.

I Cheltsov, J Park, Y Prokhorov… - EMS Surveys in …, 2021 - ems.press
Cylinders in Fano varieties Page 1 EMS Surv. Math. Sci. 8 (2021), 39–105 DOI 10.4171/EMSS/44
© 2021 European Mathematical Society Published by EMS Press This work is licensed under …

On K‐stability of some del Pezzo surfaces of Fano index 2

Y Liu, A Petracci - Bulletin of the London Mathematical Society, 2022 - Wiley Online Library
For every integer a⩾ 2 a\geqslant2, we relate the K‐stability of hypersurfaces in the
weighted projective space P (1, 1, a, a) P(1,1,a,a) of degree 2 a 2a with the GIT stability of …

Del Pezzo zoo

I Cheltsov, C Shramov - Experimental Mathematics, 2013 - Taylor & Francis
Full article: Del Pezzo Zoo Skip to Main Content Taylor and Francis Online homepage Taylor
and Francis Online homepage Log in | Register Cart 1.Home 2.All Journals 3.Experimental …