The variable-width spherical strip occupancy conjecture

Let NN be a positive integer, let x1,,xNx_1,\ldots,x_N be points on the unit sphere S2\mathbb S^{2}, and let w>0w>0. For a unit vector vv, consider the strip v,xw|\langle v,x\rangle|\leq w. Variable-width spherical strip occupancy conjecture. There is a function hh on the positive integers tending to infinity such that, for any NN points on S2\mathbb S^{2} and any width w>0w>0, there is a unit vector vv for which either at least h(N)h(N) given points lie in the strip v,xw|\langle v,x\rangle|\leq w, or no chosen point lies in the strip v,xw|\langle v,x\rangle|\leq w. This is a stronger-looking alternative formulation allowing arbitrary positive strip width, with the empty-strip alternative accounting for configurations and widths where a populated strip need not be available; the source leaves the question open.

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Primary source

Nóra Frankl, János Nagy and Márton Naszódi, “Coverings: variations on a result of Rogers and on the Epsilon-net theorem of Haussler and Welzl”, arXiv:1607.02888 (2017).

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