Symplectic-ball conjecture for Lagrangian products of a simplex and parallelohedra

Let SS be a three-dimensional simplex and let PP be any one of the five three-dimensional parallelohedra, namely the cube, hexagonal prism, elongated dodecahedron, rhombic dodecahedron, or truncated octahedron. Suppose that SS and PP are placed in an appropriate linear position, and denote their Lagrangian product by SPS\star P. Lagrangian-product symplectic-ball conjecture. The Lagrangian product SPS\star P is symplectically equivalent to a Euclidean ball. This would generalize the question posed by Balitskiy concerning Lagrangian products of a simplex and a permutohedron, and would extend the paper's results on Lagrangian products and symplectic equivalence to further space-filling polytopes. The source presents this as a proposed generalization, with no resolution stated.

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Primary source

Yaron Ostrover, Vinicius G. B. Ramos and Daniele Sepe, “From Lagrangian Products to Toric Domains via the Toda Lattice”, arXiv:2309.10912 (2023).

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