How many n-dimensional unit vectors from [itex]\mathbb{C}^n[/itex] can you pack in a set such that for any two vectors, [itex]\left<a, b\right>\leq\delta[/itex] for some delta between 0 and 1?(adsbygoogle = window.adsbygoogle || []).push({});

(<a,b> denotes the inner product).

This reduces to packing of n-2 dimensional spheres on a n-1 dimensional sphere, if that helps.

EDIT: on second thought I'm not sure if this reduces to a sphere packing problem.

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# Sphere packing problem

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