科研之友
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摘要
We give a new construction of the irregular surfaces of general type with p(g) = 5, chi = 2; K-2 = 8, recently discovered by C. Schoen in [24]. Our approach proves that, if S is a general Schoen surface, its canonical map is a finite morphism of degree 2 onto a canonical surface with invariants p(g) = 5, chi = 6; K-2 = 8, a complete intersection of a quadric and a quartic hypersurface in P-4, with 40 even nodes.
- 出版日期2015
