Semi-regularity and de Rham cohomology
Semi-regularity and de Rham cohomology
复制标题
半正则性和 de Rham 上同调
DOI:
10.1007/bf01390023
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发表时间:
1972
影响因子:
3.1
通讯作者:
S. Bloch
中科院分区:
文献类型:
--
作者:
S. Bloch
Let X be a smooth, projective variety over C.(We will work over C to fix ideas. By the Lefschetz principle, all our results are valid over any ground field of characteristic 0.) Let ZcX be a subscheme of codimension p which is a local complete intersection. After some preliminaries on de Rham cohomology and deformation theory, we define the semi-regularity map n: HI (Z, Nz~ x)--* HP+ I (X,(2~-I), where Nz, x is the normal bundle of Z in X. Z is said to be semi-regular if n is injective.