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arXiv · 1410.4328

Variants of the Kakeya problem over an algebraically closed field

Kaloyan Slavov
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Abstract

First, we study constructible subsets of $\A^n_k$ which contain a line in any direction. We classify the smallest such subsets in $\A^3$ of the type $R\cup\{g\neq 0\},$ where $g\in k[x_1,...,x_n]$ is irreducible of degree $d$, and $R\subset V(g)$ is closed. Next, we study subvarieties $X\subset\A^N$ for which the set of directions of lines contined in $X$ has the maximal possible dimension. These are variants of the Kakeya problem in an algebraic geometry context.

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Kaloyan Slavov. 2014-10-16. Variants of the Kakeya problem over an algebraically closed field. https://doi.org/10.1007/s00013-014-0685-6

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