2 problems

Let $d(a,b)$ denote the embedding function for a four-dimensional ellipsoid into a polydisc. For $b\geq6$, let $k$ be an integer satisfying $0\leq k<\sqrt{2b}+\{b\}$, and define ……

Let $b>1$ and define … where $d(a,b)$ is the symplectic embedding function for four-dimensional ellipsoids into polydiscs. Sharp threshold conjecture. … The preceding proposition e…