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Unirationality of del Pezzo surfaces of degree two over finite fields (1505.01145v1)
Published 5 May 2015 in math.AG
Abstract: We prove that every del Pezzo surface of degree two over a finite field is unirational, building on the work of Manin and an extension by Salgado, Testa, and V\'arilly-Alvarado, who had proved this for all but three surfaces. Over general fields of characteristic not equal to two, we state sufficient conditions for a del Pezzo surface of degree two to be unirational.
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