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20232025
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math.SG2025

On the spectral diameter of the Grassmannians

Habib Alizadeh, Marcelo S. Atallah, Dylan Cant +1

The diameter of the spectral pseudometric on the universal cover of the Hamiltonian diffeomorphism group of is shown to be finite whenever is a prime number.…

math.SG2024

Remarks on eternal classes in symplectic cohomology

Dylan Cant

This paper studies special classes in the symplectic cohomology of a semipositive and convex-at-infinity symplectic manifold . The classes under consideration lie in the image o…

math.SG2024

On the rigidity of translated points

Dylan Cant, Jakob Hedicke

We show that there exist contact isotopies of the standard contact sphere whose time-1 maps do not have any translated points which are optimally close to the identity in the Shelu…

math.SG2024

The spectral diameter of a symplectic ellipsoid

Habib Alizadeh, Marcelo S. Atallah, Dylan Cant

The spectral diameter of a symplectic ball is shown to be equal to its capacity; this result upgrades the known bound by a factor of two and yields a simple formula for the spectra…

math.SG2024

Selective Floer cohomology for contact vector fields

Dylan Cant, Igor Uljarević

This paper associates a persistence module to a contact vector field on the ideal boundary of a Liouville manifold. The persistence module measures the dynamics of on the r…

math.SG2023

Lagrangian Intersections and the spectral norm in convex-at-infinity symplectic manifolds

Habib Alizadeh, Marcelo S. Atallah, Dylan Cant

Given a compact Lagrangian in a semipositive convex-at-infinity symplectic manifold , we establish a cup-length estimate for the action values of associated to a Hamilto…

math.SG2023

Extensible positive loops and vanishing of symplectic cohomology

Dylan Cant, Jakob Hedicke, Eric Kilgore

The symplectic cohomology of certain symplectic manifolds with non-compact ends modelled on the positive symplectization of a compact contact manifold is shown to vanish wh…