On the constant scalar curvature Kähler metrics (I)—A priori estimates

X Chen, J Cheng - Journal of the American Mathematical Society, 2021 - ams.org
Accepted Manuscript Page 1 Xiuxiong Chen, Jingrui Cheng On the constant scalar
curvature Kähler metrics I–Apriori estimates Journal of the American Mathematical Society …

Convergence of Ricci flows with bounded scalar curvature

R Bamler - Annals of Mathematics, 2018 - projecteuclid.org
In this paper we prove convergence and compactness results for Ricci flows with bounded
scalar curvature and entropy. More specifically, we show that Ricci flows with bounded …

[HTML][HTML] Heat kernel and curvature bounds in Ricci flows with bounded scalar curvature

RH Bamler, QS Zhang - Advances in Mathematics, 2017 - Elsevier
In this paper we analyze Ricci flows on which the scalar curvature is globally or locally
bounded from above by a uniform or time-dependent constant. On such Ricci flows we …

On the structure of almost Einstein manifolds

G Tian, B Wang - Journal of the American Mathematical Society, 2015 - ams.org
In this paper, we study the structure of the limit space of a sequence of almost Einstein
manifolds, which are generalizations of Einstein manifolds. Roughly speaking, such …

Space of Ricci flows (II)

X Chen, B Wang - arXiv preprint arXiv:1405.6797, 2014 - arxiv.org
Based on the compactness of the moduli of non-collapsed Calabi-Yau spaces with mild
singularities, we set up a structure theory for polarized K\" ahler Ricci flows with proper …

On the existence of constant scalar curvature Kähler metric: a new perspective

X Chen - Annales mathématiques du Québec, 2018 - Springer
In this note, we introduce a new continuity path of fourth order nonlinear equations
connecting the cscK equation to a second order elliptic equation, which is the critical point …

On the conditions to extend Ricci flow (III)

X Chen, B Wang - International Mathematics Research Notices, 2013 - ieeexplore.ieee.org
We simplify and improve the curvature estimates in [8] and [9]. Furthermore, we develop
some new estimates of volume ratio for the Ricci flow with bounded scalar curvature. These …

Hypersymplectic 4-manifolds, the -Laplacian flow, and extension assuming bounded scalar curvature

J Fine, C Yao - 2018 - projecteuclid.org
A hypersymplectic structure on a 4-manifold X is a triple ω ̲ of symplectic forms which at
every point span a maximal positive definite subspace of Λ 2 for the wedge product. This …

A local curvature estimate for the Ricci flow

B Kotschwar, O Munteanu, J Wang - Journal of Functional Analysis, 2016 - Elsevier
We show that the norm of the Riemann curvature tensor of any smooth solution to the Ricci
flow can be explicitly estimated in terms of its initial values on a given ball, a local uniform …

Shi-type estimates and finite time singularities of flows of G2 structures

G Chen - The Quarterly Journal of Mathematics, 2018 - academic.oup.com
In this paper, we extend Lotay–Wei's Shi-type estimate from Laplacian flow to more general
flows of G2 structures including the modified Laplacian co-flow. Then we prove a version of κ …