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Non hyperelliptic curves of genus three over finite fields of characteristic two

Enric Nart·Christophe Ritzenthaler
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Abstract

Let k=F_q be a finite field of even characteristic. We obtain in this paper a complete classification, up to k-isomorphism, of non singular quartic plane curves defined over k. We find explicit rational normal models and we give closed formulas for the total number of k-isomorphism classes. We deduce from these computations the number of k-rational points of the different strata by the Newton polygon of the non hyperelliptic locus M_3^{nh} of the moduli space M_3 of curves of genus 3. By adding to these computations the knowed results on the hyperelliptic locus we obtain a complete picture of these strata for M_3.

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Enric Nart, Christophe Ritzenthaler. 2004-02-02. Non hyperelliptic curves of genus three over finite fields of characteristic two. https://arxiv.org/abs/math/0312366

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