Non-classical Godeaux surfaces
Non-classical Godeaux surfaces
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非经典 Godeaux 曲面
DOI:
10.1007/s00208-008-0284-6
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发表时间:
2008
影响因子:
1.4
通讯作者:
C. Liedtke
中科院分区:
文献类型:
--
作者:
C. Liedtke
A non-classical Godeaux surface is a minimal surface of general type with χ = K2 = 1 but with h01 ≠ 0. We prove that such surfaces fulfill h01 = 1 and they can exist only over fields of positive characteristic at most 5. Like non-classical Enriques surfaces they fall into two classes: the singular and the supersingular ones. We give a complete classification in characteristic 5 and compute their Hodge-, Hodge–Witt- and crystalline cohomology (including torsion). Finally, we give an example of a supersingular Godeaux surface in characteristic 5.