The ellipsoid full-packing conjecture for closed symplectic four-manifolds

Let (X,ω)(X,\omega) be a closed 44-dimensional symplectic manifold. A symplectic ellipsoid is a domain E(a,b)C2E(a,b)\subset\mathbb{C}^2 defined by

E(a,b)={(z,w)C2(πz2,πw2)Conv{(0,0),(a,0),(0,b)}}.E(a,b)=\left\{(z,w)\in\mathbb{C}^2\mid \left(\pi|z|^2,\pi|w|^2\right)\in\operatorname{Conv}\left\{(0,0),(a,0),(0,b)\right\}\right\}.

It fully packs XX if there is a symplectic embedding of an ellipsoid into XX whose image has full symplectic volume. Ellipsoid full-packing conjecture. Every closed 44-dimensional symplectic manifold is fully packed by one ellipsoid. This would extend full packing results from rational symplectic manifolds to arbitrary closed symplectic 44-manifolds and would allow strong packing stability for ellipsoids to imply packing stability for all closed manifolds. The statement is presented in the source as a conjecture; no resolution is given.

Sources & referencesView supporting material

Primary source

Olguta Buse, Richard Hind and Emmanuel Opshtein, “Packing stability for symplectic 4-manifolds”, arXiv:1404.4183 (2014).

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