Surfaces on the Severi line
Surfaces on the Severi line
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Severi 线上的表面
DOI:
10.1016/j.matpur.2015.11.012
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
L. Stoppino
中科院分区:
文献类型:
--
作者:
M. A. Barja;R. Pardini;L. Stoppino
Let S be a minimal complex surface of general type and of maximal Albanese dimension; by the Severi inequality one has KS2 ≥ 4χ(OS). We prove that the equality KS2 = 4χ(OS) holds if and only if q(S) := h1(OS) = 2 and the canonical model of S is a double cover of the Albanese surface branched on an ample divisor with at most negligible singularities.