Rationalité d’un fibré en coniques
Rationalité d’un fibré en coniques
复制标题
圆锥形纤维的合理性
DOI:
--
复制
发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Jean
中科院分区:
文献类型:
--
作者:
Jean
F. Campana had asked whether a certain threefold is rational. F. Catanese, K. Oguiso and T. T. Truong have recently shown that this variety is birational to a specific conic bundle threefold, which they show is unirational. Computing residues of elements in the Brauer group of the function field of the plane, I prove that that conic bundle threefold is birational to another conic bundle threefold, and the latter is clearly a rational variety.