The infinite staircase conjecture for ellipsoid embeddings into polydisks

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Let n≥2n\geq 2 and k≥0k\geq 0. For each i≥0i\geq 0, let Ai,n(k)A_{i,n}^{(k)} and A^i,n(k)\hat{A}_{i,n}^{(k)} be the associated classes, and let CLn,k(α)C_{L_{n,k}}(\alpha), Ln,kL_{n,k}, ci,n,kc_{i,n,k}, di,n,kd_{i,n,k}, and Sn,kS_{n,k} denote the quantities defined above. Infinite staircase conjecture. For all α∈[c0,n,kd0,n,k,Sn,k]\alpha\in [\frac{c_{0,n,k}}{d_{0,n,k}},S_{n,k}],

CLn,k(α)=sup⁡{Γα,Ln,k(A)∣A∈⋃i=0∞Ai,n(k),A^i,n(k)}.C_{L_{n,k}}(\alpha)=\sup\left\{\Gamma_{\alpha,L_{n,k}}(A)\left|A\in\bigcup_{i=0}^{\infty}\\{A_{i,n}^{(k)},\hat{A}_{i,n}^{(k)}\\}\right.\right\}.

This conjecture asserts that the displayed families of classes provide all the lower bounds needed to describe the infinite staircase on the stated interval.

References

Primary source

Michael Usher, “Infinite staircases in the symplectic embedding problem for four-dimensional ellipsoids into polydisks”, arXiv:1801.06762 (2018).

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