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arXiv · 2209.13339

Clubs and their applications

Vito Napolitano·Olga Polverino·Paolo Santonastaso·Ferdinando Zullo
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Abstract

Clubs of rank k are well-celebrated objects in finite geometries introduced by Fancsali and Sziklai in 2006. After the connection with a special type of arcs known as KM-arcs, they renewed their interest. This paper aims to study clubs of rank n in PG$(1,q^n)$. We provide a classification result for (n-2)-clubs of rank n, we analyze the $\mathrm{\Gamma L}(2,q^n)$-equivalence of the known subspaces defining clubs, for some of them the problem is then translated in determining whether or not certain scattered spaces are equivalent. Then we find a polynomial description of the known families of clubs via some linearized polynomials. Then we apply our results to the theory of blocking sets, KM-arcs, polynomials and rank metric codes, obtaining new constructions and classification results.

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Vito Napolitano, Olga Polverino, Paolo Santonastaso, Ferdinando Zullo. 2022-09-27. Clubs and their applications. https://arxiv.org/abs/2209.13339

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