On the pinned distances problem in positive characteristic

نویسندگان

چکیده

We study the Erd?s–Falconer distance problem for a set A ? F 2 $A\subset \mathbb {F}^2$ , where $\mathbb {F}$ is field of positive characteristic p $p$ . If = {F}=\mathbb {F}_p$ and cardinality | $|A|$ exceeds 5 / 4 $p^{5/4}$ we prove that $A$ determines an asymptotically full proportion feasible distances. For small sets namely when ? 3 $|A|\leqslant p^{4/3}$ over any either ? $\gg |A|^{2/3}$ distances, or lies on isotropic line. both large sets, results proved are in fact pinned

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ژورنال

عنوان ژورنال: Journal of the London Mathematical Society

سال: 2022

ISSN: ['1469-7750', '0024-6107']

DOI: https://doi.org/10.1112/jlms.12524