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Related papers: Examples around the strong Viterbo conjecture

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We introduce a new normalization condition for symplectic capacities, which we call cube normalization. This condition is satisfied by the Lagrangian capacity and the cube capacity. Our main result is an analogue of the strong Viterbo…

Symplectic Geometry · Mathematics 2022-08-30 Jean Gutt , Miguel Pereira , Vinicius G. B. Ramos

In this note, we show that the strong Viterbo conjecture holds true on any convex toric domain, and that the Viterbo's volume-capacity conjecture holds for the product of a $1$-unconditional convex body $A\subset\mathbb{R}^{n}$ and its…

Symplectic Geometry · Mathematics 2020-08-21 Kun Shi , Guangcun Lu

We present a counterexample to Viterbo's volume-capacity conjecture. This implies, in particular, that in contrast with a well-known conjecture, symplectic capacities do not coincide on the class of convex domains in the classical phase…

Symplectic Geometry · Mathematics 2025-11-24 Pazit Haim-Kislev , Yaron Ostrover

A theorem of Gutt-Hutchings-Ramos asserts that all normalized symplectic capacities give the same value for monotone four-dimensional toric domains. We generalize this theorem to arbitrary dimension. The new ingredient in our proof is the…

Symplectic Geometry · Mathematics 2023-07-25 Dan Cristofaro-Gardiner , Richard Hind

It is a long-standing conjecture that all symplectic capacities which are equal to the Gromov width for ellipsoids coincide on a class of convex domains in $\mathbb{R}^{2n}$. It is known that they coincide for monotone toric domains in all…

Symplectic Geometry · Mathematics 2024-09-10 Jean Gutt , Vinicius G. B. Ramos

We prove that the cylindrical capacity of a dynamically convex domain in $\mathbb{R}^4$ agrees with the least symplectic area of a disk-like global surface of section of the Reeb flow on the boundary of the domain. Moreover, we prove the…

Symplectic Geometry · Mathematics 2024-12-05 Oliver Edtmair

In this note we study the behavior of symplectic capacities of convex domains in the classical phase space with respect to symplectic $p$-products. As an application, by using a "tensor power trick", we show that it is enough to prove the…

Symplectic Geometry · Mathematics 2023-09-29 Pazit Haim-Kislev , Yaron Ostrover

We use positive S^1-equivariant symplectic homology to define a sequence of symplectic capacities c_k for star-shaped domains in R^{2n}. These capacities are conjecturally equal to the Ekeland-Hofer capacities, but they satisfy axioms which…

Symplectic Geometry · Mathematics 2018-10-24 Jean Gutt , Michael Hutchings

We use explicit pseudoholomorphic curve techniques (without virtual perturbations) to define a sequence of symplectic capacities analogous to those defined recently by the second named author using symplectic field theory. We then compute…

Symplectic Geometry · Mathematics 2024-05-22 Dusa McDuff , Kyler Siegel

A long-standing conjecture states that all normalized symplectic capacities coincide on the class of convex subsets of ${\mathbb R}^{2n}$. In this note we focus on an asymptotic (in the dimension) version of this conjecture, and show that…

Symplectic Geometry · Mathematics 2015-09-08 Efim D. Gluskin , Yaron Ostrover

In this work we discuss a conjecture of Viterbo relating the symplectic capacity of a convex body and its volume. The conjecture states that among all 2n-dimensional convex bodies with a given volume the euclidean ball has maximal…

Symplectic Geometry · Mathematics 2007-05-23 Shiri Artstein-Avidan , Yaron Ostrover

We initiate the study of the rational SFT capacities of Siegel using tools in toric algebraic geometry. In particular, we derive new (often sharp) bounds for the RSFT capacities of a strongly convex toric domain in dimension $4$. These…

Symplectic Geometry · Mathematics 2021-06-22 Julian Chaidez , Ben Wormleighton

We establish computational results concerning the Lagrangian capacity from "Cieliebak and Mohnke - Punctured holomorphic curves and Lagrangian embeddings". More precisely, we show that the Lagrangian capacity of a 4-dimensional convex toric…

Symplectic Geometry · Mathematics 2022-05-27 Miguel Pereira

Given two 4-dimensional ellipsoids whose symplectic sizes satisfy a specified inequality, we prove that a certain loop of symplectic embeddings between the two ellipsoids is noncontractible. The statement about symplectic ellipsoids is a…

Symplectic Geometry · Mathematics 2018-09-13 Mihai Munteanu

We investigate the convexity up to symplectomorphism (called symplectic convexity) of star-shaped toric domains in $\mathbb R^4$. In particular, based on the criterion from Chaidez-Edtmair via Ruelle invariant and systolic ratio of the…

Symplectic Geometry · Mathematics 2022-03-28 Julien Dardennes , Jean Gutt , Jun Zhang

ECH capacities give obstructions to symplectically embedding one symplectic four-manifold with boundary into another. We compute the ECH capacities of a large family of symplectic four-manifolds with boundary, called "concave toric…

Symplectic Geometry · Mathematics 2017-05-17 Keon Choi , Daniel Cristofaro-Gardiner , David Frenkel , Michael Hutchings , Vinicius G. B. Ramos

We show that every dynamically convex toric domain in $\mathbb R^4$ admits a $C^1$-neighborhood $\mathcal U$ within the space of star-shaped domains of $\mathbb R^4$ with the following property: for any $X \in \mathcal U$, every Legendrian…

Symplectic Geometry · Mathematics 2024-04-09 Jungsoo Kang , Jun Zhang

We establish computational results concerning the Lagrangian capacity, originally defined by Cieliebak-Mohnke. More precisely, we show that the Lagrangian capacity of a 4-dimensional convex toric domain is equal to its diagonal. Working…

Symplectic Geometry · Mathematics 2024-09-17 Miguel Pereira

We extend the family of capacities given by McDuff and Siegel by including a constraint $\ell$ on the number of positive asymptotically cylindrical ends of curves showing up in the definition. We prove a generalized computation formula for…

Symplectic Geometry · Mathematics 2025-08-19 Jonathan Michala

Embedded contact homology gives a sequence of obstructions to four-dimensional symplectic embeddings, called ECH capacities. In "Symplectic embeddings into four-dimensional concave toric domains", the author, Choi, Frenkel, Hutchings and…

Symplectic Geometry · Mathematics 2019-07-16 Dan Cristofaro-Gardiner
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