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We prove that all minimal symplectic four-manifolds are essentially irreducible. We also clarify the relationship between holomorphic and symplectic minimality of K\"ahler surfaces. This leads to a new proof of the deformation-invariance of…

Symplectic Geometry · Mathematics 2007-05-23 M. J. D. Hamilton , D. Kotschick

In this paper, we derive apriori estimates for constant scalar curvature K\"ahler metrics on a compact K\"ahler manifold. We show that higher order derivatives can be estimated in terms of a $C^0$ bound for the K\"ahler potential. We also…

Differential Geometry · Mathematics 2017-12-20 Xiuxiong Chen , Jingrui Cheng

In this paper we present an explicit construction of a relative symplectic packing. This confirms the sharpness of the upper bound for the relative packing of a ball into the pair (CP^2, T^2) of the standard complex projective plane and the…

Symplectic Geometry · Mathematics 2010-03-16 Lev Buhovsky

We apply a local differential geometric framework from K\"ahler toric geometry to (re)construct Calabi's extremal K\"ahler metrics on $\bbC\bbP^n$ blown-up at a point from data on the moment polytope.

Differential Geometry · Mathematics 2007-05-23 Aleksis Raza

We prove the existence of extremal, non-csc, K\"ahler metrics on certain unstable projectivised vector bundles $\P (E) \to M$ over a cscK-manifold $M$ with discrete holomorphic automorphism group, in certain adiabatic K\"ahler classes. In…

Differential Geometry · Mathematics 2015-11-03 Till Brönnle

Based on the theory of an infinitesimal Newton-Okounkov body, we extend the results of Lazarsfeld-Pareschi-Popa on abelian surfaces. Moreover, we show that the higher syzygies of $(X,L)$ are completely determined by its Seshadri constant…

Algebraic Geometry · Mathematics 2017-09-06 Jaesun Shin

Consider a symplectic embedding of a disjoint union of domains into a symplectic manifold $M$. Such an embedding is called Kahler-type, or respectively tame, if it is holomorphic with respect to some (not a priori fixed, Kahler-type)…

Symplectic Geometry · Mathematics 2024-05-24 Michael Entov , Misha Verbitsky

We present new constructions of Kaehler metrics with constant scalar curvature on complex surfaces, in particular on certain del Pezzo surfaces. Some higher dimensional examples are provided as well.

Differential Geometry · Mathematics 2007-05-23 Yann Rollin , Michael A. Singer

We consider the formation of singularities along the Calabi flow with the assumption of the uniform Sobolev constant. In particular, on K\"ahler surface we show that any "maximal bubble" has to be a scalar flat ALE K\"ahler metric. In some…

Differential Geometry · Mathematics 2009-12-24 Xiuxiong Chen , Weiyong He

We obtain a local classification of complex homothetic foliations on Kaehler manifolds by complex curves. This is used to construct almost Kaehler, Ricci-flat metrics subject to additional curvature properties.

Differential Geometry · Mathematics 2012-06-18 Simon G. Chiossi , Paul-Andi Nagy

This article finds constant scalar curvature Kahler metrics on certain compact complex surfaces. The surfaces considered are those admitting a holomorphic submersion to a curve, with fibres of genus at least 2. The proof is via an adiabatic…

Differential Geometry · Mathematics 2007-05-23 Joel Fine

We compute the asymptotic number of cylinders, weighted by their area to any non-negative power, on any cyclic branched cover of any generic translation surface in any stratum. Our formulas depend only on topological invariants of the cover…

Dynamical Systems · Mathematics 2025-12-10 David Aulicino , Aaron Calderon , Carlos Matheus , Nick Salter , Martin Schmoll

In this note we link symplectic and convex geometry by relating two seemingly different open conjectures: a symplectic isoperimetric-type inequality for convex domains, and Mahler's conjecture on the volume product of centrally symmetric…

Metric Geometry · Mathematics 2015-01-14 Shiri Artstein-Avidan , Roman Karasev , Yaron Ostrover

We provide a moment map interpretation for the coupled K\"ahler-Einstein equations introduced by Hultgren and Witt Nystr\"om, and in the process introduce a more general system of equations, which we call coupled cscK equations. A…

Differential Geometry · Mathematics 2019-02-27 Ved V. Datar , Vamsi Pritham Pingali

We give the values of the Siegel-Veech constants associated with saddle connections having distinct endpoints on translation surfaces in Prym eigenform loci in $\Omega \mathcal{M}_3(2,2)^{\rm odd}$. In particular, we show that these…

Algebraic Geometry · Mathematics 2026-02-24 Duc-Manh Nguyen

We give a new proof of the following theorem: moduli spaces of stable complexes on a complex projective K3 surface, with primitive Mukai vector and with respect to a generic Bridgeland stability condition, are hyperk\"{a}hler varieties of…

Algebraic Geometry · Mathematics 2021-03-18 Alessio Bottini

We prove that the expected value and median of the supremum of $L^2$ normalized random holomorphic fields of degree $n$ on $m$-dimensional K\"ahler manifolds are asymptotically of order $\sqrt{m\log n}$. This improves the prior result of…

Probability · Mathematics 2014-06-03 Renjie Feng , Steve Zelditch

In this article we study the injective Kobayashi metric on complex surfaces.

Complex Variables · Mathematics 2020-10-07 John Erik Fornaess , Maria Trybula , Erlend Fornaess Wold

We study moduli spaces of sheaves over non-projective K3 surfaces. More precisely, if $v=(r,\xi,a)$ is a Mukai vector on a K3 surface $S$ with $r$ prime to $\xi$ and $\omega$ is a "generic" K\"ahler class on $S$, we show that the moduli…

Algebraic Geometry · Mathematics 2017-03-15 Arvid Perego , Matei Toma

In a previous paper, we showed that the blowup of a weighted extremal K\"ahler manifold at a relatively stable fixed point admits a weighted extremal metric. Using this result, we prove that a weighted extremal manifold is relatively…

Differential Geometry · Mathematics 2023-09-06 Michael Hallam