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Fibonacci lattices have minimal dispersion on the two-dimensional torus

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arxiv 1905.03856 v1 pith:YIX6BDN7 submitted 2019-05-07 math.MG math.CO

classification math.MGmath.CO
keywords dispersionpointboundfibonaccilowerlatticessettingtorus
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abstract

We study the size of the largest rectangle containing no point of a given point set in the two-dimensional torus, the dispersion of the point set. A known lower bound for the dispersion of any point set of cardinality $n\ge 2$ in this setting is $2/n$. We show that if $n$ is a Fibonacci number then the Fibonacci lattice has dispersion exactly $2/n$ meeting the lower bound. Moreover, we completely characterize integration lattices achieving the lower bound and provide insight into the structure of other optimal sets. We also treat related results in the nonperiodic setting.

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  1. On the fixed volume discrepancy of the Fibonacci sets in the integral norms

    math.NA 2019-08 accept novelty 6.0 of 10

    For finite p, the periodic r-smooth fixed volume L_p discrepancy of the Fibonacci point set with b_n points is O(sqrt(log(b_n v)) / b_n^r); for p=∞ it is O(log(b_n v)/b_n^r).

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