Even sets of four nodes on rational surfaces
Abstract
We describe smooth rational projective algebraic surfaces X, over an algebraically closed field of characteristic different from 2, having an even set of four disjoint (-2)-curves, i.e. such that the sum of the four curves is divisible by 2 in the Picard group of XSimilar works
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Last time updated on 12/11/2016
This paper was published in Archivio istituzionale della ricerca - Università di Ferrara.
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