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Webs of rational curves on real surfaces and a classification of real weak del Pezzo surfaces (1807.05881v3)
Published 16 Jul 2018 in math.AG
Abstract: We classify webs of minimal degree rational curves on surfaces and give a criterion for webs being hexagonal. In addition, we classify Neron-Severi lattices of real weak del Pezzo surfaces. These two classifications are related to root subsystems of E8.
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