Examples of non-target-representable symplectic capacities

We give the first concrete example of a symplectic capacity that is not target-representable. The capacity is defined on the class of all compact and exact symplectic manifolds. This provides some concrete answer to a question by Cieliebak, Hofer, Latschev, and Schlenk. We also show that a capacity on the class of all closed symplectic manifolds is not target-representable, if it is finite at certain symplectic manifolds. In particular, the Hofer-Zehnder capacity on the class of all closed symplectic manifolds is not target-representable.

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Publication Details

Journal
Differential Geometry and its Applications
Published
2025-11-26
DOI
https://doi.org/10.1016/j.difgeo.2025.102309
Primary Topic
Geometric and Algebraic Topology
Type
article
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article

Examples of non-target-representable symplectic capacities

Yann Guggisberg, Fabian Ziltener
Differential Geometry and its Applications
Geometric and Algebraic Topology
article

Examples of non-target-representable symplectic capacities

Yann Guggisberg, Fabian Ziltener
article en

Abstract

We give the first concrete example of a symplectic capacity that is not target-representable. The capacity is defined on the class of all compact and exact symplectic manifolds. This provides some concrete answer to a question by Cieliebak, Hofer, Latschev, and Schlenk. We also show that a capacity on the class of all closed symplectic manifolds is not target-representable, if it is finite at certain symplectic manifolds. In particular, the Hofer-Zehnder capacity on the class of all closed symplectic manifolds is not target-representable.

Differential Geometry and its ApplicationsVol. 102
Openalex Percentile: Top 58%
Geometric and Algebraic Topology
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Examples of non-target-representable symplectic capacities — Yann Guggisberg, Fabian Ziltener · Differential Geometry and its Applications (2025) | TGRS Research Map | TGRS