Abstract
Let p be a prime and let A be a subset of F p with A = -A and |A \ {0}| ≤ 2log3(p). Then there is an element of F p which has a unique representation as a difference of two elements of A.
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Duc, T.D., Schmidt, B. Unique differences in symmetric subsets of F P . Combinatorica 37, 167–182 (2017). https://doi.org/10.1007/s00493-015-3282-9
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DOI: https://doi.org/10.1007/s00493-015-3282-9