English
Related papers

Related papers: Beyond ECH capacities

200 papers

Following Ghomi and Tabachnikov we study topological obstructions to totally skew embeddings of a smooth manifold M in Euclidean spaces. This problem is naturally related to the question of estimating the geometric dimension of the stable…

Algebraic Topology · Mathematics 2010-11-23 Djordje Baralic , Branislav Prvulovic , Gordana Stojanovic , Sinisa Vrecica , Rade Zivaljevic

We show that a complex manifold M in the boundary of a smooth bounded pseudoconvex domain in C^n is an obstruction to compactness of the d-bar-Neumann operator on the domain, provided that at some point of M, the Levi form has the maximal…

Complex Variables · Mathematics 2021-03-08 Sonmez Sahutoglu , Emil J. Straube

We study neighborhoods of configurations of symplectic surfaces in symplectic 4-manifolds. We show that suitably `positive' configurations have neighborhoods with concave boundaries and we explicitly describe open book decompositions of the…

Geometric Topology · Mathematics 2014-10-01 David T. Gay

By proving that several new complexes of embedded disks are highly connected, we obtain several new homological stability results. Our main result is homological stability for topological chiral homology on an open manifold with…

Algebraic Topology · Mathematics 2016-02-08 Alexander Kupers , Jeremy Miller

Generalizing the canonical symplectization of contact manifolds, we construct an infinite dimensional non-linear Stiefel manifold of weighted embeddings into a contact manifold. This space carries a symplectic structure such that the…

Symplectic Geometry · Mathematics 2022-06-20 Stefan Haller , Cornelia Vizman

We investigate the notion of symplectic divisorial compactification for symplectic 4-manifolds with either convex or concave type boundary. This is motivated by the notion of compactifying divisors for open algebraic surfaces. We give a…

Symplectic Geometry · Mathematics 2014-11-12 Tian-Jun Li , Cheuk Yu Mak

We construct a new twenty-dimensional family of projective eight-dimensional irreducible holomorphic symplectic manifolds: the compactified moduli space M_3(Y) of twisted cubics on a smooth cubic fourfold Y that does not contain a plane is…

Algebraic Geometry · Mathematics 2013-07-22 Christian Lehn , Manfred Lehn , Christoph Sorger , Duco van Straten

A link in the 3-sphere is homotopically trivial, according to Milnor, if its components bound disjoint maps of disks in the 4-ball. This paper concerns the question of what spaces give rise to the same class of homotopically trivial links…

Geometric Topology · Mathematics 2010-10-15 Vyacheslav Krushkal

In this paper we study whether symplectic toric manifolds are symplectically cohomologically rigid. Here we say that symplectic cohomological rigidity holds for some family of symplectic manifolds if the members of that family can be…

Symplectic Geometry · Mathematics 2020-03-02 Milena Pabiniak , Susan Tolman

In an earlier paper we explained how to convert the problem of symplectically embedding one 4-dimensional ellipsoid into another into the problem of embedding a certain set of disjoint balls into \CP^2 by using a new way to desingularize…

Symplectic Geometry · Mathematics 2014-02-26 Dusa McDuff

We prove that any weakly symplectically fillable contact manifold is tight. Furthermore we verify the strong Weinstein conjecture for contact manifolds that appear as the concave boundary of a directed symplectic cobordism whose positive…

Symplectic Geometry · Mathematics 2025-04-29 Wolfgang Schmaltz , Stefan Suhr , Kai Zehmisch

Integrable Hamiltonian systems on symplectic manifolds have been well-studied. However, an intrinsic property of these kind of systems is that they can only live on even dimensional manifolds. To introduce a similar notion of integrability…

Dynamical Systems · Mathematics 2023-05-08 Senne Ignoul

We consider compact K\"ahlerian manifolds $X$ of even dimension 4 or more, endowed with a log-symplectic structure $\Phi$, a generically nondegenerate closed 2-form with simple poles on a divisor $D$ with local normal crossings. A simple…

Algebraic Geometry · Mathematics 2022-11-22 Ziv Ran

This paper is concerned with the rational symplectic field theory in the Floer case. For this observe that in the general geometric setup for symplectic field theory the contact manifolds can be replaced by mapping tori of symplectic…

Symplectic Geometry · Mathematics 2009-01-13 Oliver Fabert

A theorem of Delzant states that any symplectic manifold $(M,\om)$ of dimension $2n$, equipped with an effective Hamiltonian action of the standard $n$-torus $\T^n = \R^{n}/2\pi\Z^n$, is a smooth projective toric variety completely…

Differential Geometry · Mathematics 2007-05-23 Miguel Abreu

Let $V$ be a bounded domain with smooth boundary in $\R^n$, and $D^*V$ denote its disc cotangent bundle. We compute symplectic homology of $D^*V$, in terms of relative homology of loop spaces on the closure of $V$. We use this result to…

Symplectic Geometry · Mathematics 2013-06-18 Kei Irie

The Milnor fibre of a $\mathbb{Q}$-Gorenstein smoothing of a Wahl singularity is a rational homology ball $B_{p,q}$. For a canonically polarised surface of general type $X$, it is known that there are bounds on the number $p$ for which…

Symplectic Geometry · Mathematics 2020-04-06 Jonathan David Evans , Giancarlo Urzúa

We show that there is an hierarchy of intersection rigidity properties of sets in a closed symplectic manifold: some sets cannot be displaced by symplectomorphisms from more sets than the others. We also find new examples of rigidity of…

Symplectic Geometry · Mathematics 2014-01-14 Michael Entov , Leonid Polterovich

K. Cieliebak, H. Hofer, J. Latschev, and F. Schlenk (CHLS) posed the problem of finding a minimal generating set for the (symplectic) capacities on a given symplectic category. We show that if the category contains a certain one-parameter…

Symplectic Geometry · Mathematics 2021-11-30 Dušan Joksimović , Fabian Ziltener

We prove that the generalized symplectic capacities recognize objects in symplectic categories whose objects are of the form $(M, \omega)$, such that $M$ is a compact and 1-connected manifold, $\omega$ is an exact symplectic form on $M$,…

Symplectic Geometry · Mathematics 2022-06-07 Yann Guggisberg , Fabian Ziltener