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arXiv · alg-geom/9610023

On maximal curves

Rainer Fuhrmann·Arnaldo Garcia·Fernando Torres
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Abstract

We study arithmetical and geometrical properties of maximal curves, that is, curves defined over the finite field F_{q^2} whose number of F_{q^2}-rational points reaches the Hasse-Weil upper bound. Under a hypothesis on non-gaps at a rational point, we prove that maximal curves are F_{q^2}-isomorphic to y^q + y = x^m, for some $m \in Z^+$. As a consequence we show that a maximal curve of genus g=(q-1)^2/4 is F_{q^2}-isomorphic to the curve y^q + y = x^{(q+1)/2}.

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Rainer Fuhrmann, Arnaldo Garcia, Fernando Torres. 1996-10-31. On maximal curves. https://arxiv.org/abs/alg-geom/9610023

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