Fujita decomposition and Massey product for fibered varieties
Fujita decomposition and Massey product for fibered varieties
复制标题
纤维品种的藤田分解和梅西积
DOI:
10.1017/nmj.2021.15
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发表时间:
2021
影响因子:
0.8
通讯作者:
F. Zucconi
中科院分区:
文献类型:
--
作者:
L. Rizzi;F. Zucconi
Let be a semistable fibration where X is a smooth variety of dimension and B is a smooth curve. We give the structure theorem for the local system of the relative -forms and of the relative top forms. This gives a neat interpretation of the second Fujita decomposition of . We apply our interpretation to show the existence, up to base change, of higher irrational pencils and on the finiteness of the associated monodromy representations under natural Castelnuovo-type hypothesis on local subsystems. Finally, we give a criterion to have that X is not of Albanese general type if .